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Why learn Angular?

OverviewAngular is a TypeScript-based open-source web application framework developed by Google’s Angular team along with a community of individuals and corporations. The development of Angular applications involves writing the code using Typescript, a superset of Javascript, along with HTML, CSS, etc. Then the code written in Typescript compiles to Javascript and is rendered in the browser. This allows developers to create Single Page Applications (SPAs) and therefore, gives the user very reactive user experience. The HTML is extended into the application and the attributes are interpreted in order to perform data binding.Popularity And VersionsAngular is the most widely used Javascript framework, used by developers for building web, desktop, and mobile applications. There have been seven version releases of Angular till date. They are:Angular 2.0 - released on September 14, 2016Angular 4.0 - released on March 23, 2017Angular 5.0 - released on November 1, 2017Angular 6.0 - released on May 4, 2018Angular 7.0 - released on October 18, 2018Angular 8.0 - released on May 28, 2019.There have been talks of future releases fuelled by the expected release of Ivy, an entirely new engine that is backward compatible and is based on the incremental DOM architecture. Engineered considering tree shaking, the application bundles will only include the parts of Angular source code that is actually used by the application.Career and Salary as an Angular developerBy learning Angular, you will get a comprehensive knowledge of Angular development and be able to pursue your career as a Front-End Developer, Software Engineer, Software Developer, etc. You will get all the proper skills, exposure, a hands-on approach and moreover, be able to concentrate in particular areas of development.Payscale reports state that on average, an Entry-Level Front End Developer earns US$65,661 per year with the highest figure being US$96,392 with the experienced Front End Developers earning an average of US$86,502 and earning as high as US$127,102 per year.An Entry-Level Software Developer earns an average of U$65,995 per year going as high as US$93,853. The experienced ones earn an average of US$89,756 every year, the highest earnings going up to US$123,445.The Software Engineers enter the frame too and earn quite well when compared to Front End Developers and Software Developers. Every year, Entry-Level Software Engineers get paid $78,958 on an average with the highest salary going as high as $117,107 while the Experienced Software Engineers earn a whopping US$101,022 on an average and as high as $144,090 per annum.Job Roles with Angular skillsEntry-Level Experience salary in US$/yearExperienced salary in US$/yearFront End Developer65,661Highest 96,39286,502Highest 127,102Software Developer65,995Highest 93,85389,756Highest 123,445Software Engineer78,958Highest 117,107101,022Highest 144,090You will be able to work with various companies working on Angular. Being an Angular equipped Software Developer is such a prolific, growing, and interesting career option because of Angular being so popular amongst the major software companies with the future looking very bright indeed.The major companies hiring Angular Developers are as follows:Google, Inc.International BusinessMachines (IBM) Corp.Microsoft CorpIntel CorporationCisco Systems Inc.The most fascinating thing to hear is all of the above organisations do not only hire the experienced Angular Developers but the entry-level ones as well, thus providing a lot of scope for progressive growth at the beginning of the career.BenefitsNow, the benefits. The angular framework is popular for various reasons, and there are numerous benefits of learning Angular for both the developers and employers. Its framework is improved and more simplified, making software development easier and a popular choice for the major companies. Here are the various benefits of using Angular.Individual benefits:A solid understanding of the Angular framework helps you in the following manner:Reduced coding: Angular 7, one of the latest versions of the Angular framework, supports Model View Controller (MVC) Developers which helps in writing shortcodes reducing time and effortAngular Edge: Upskilled with Angular, developers can now stand up against the rising demands for Angular framework in the software industry giving them an edge over others in finding high-paying jobsMultiple Job Roles: Developers skilled in Angular can work in multiple job roles like Front-End Developer, Software Developer, Software Architect, etcCreate with Ease: Create your own customizable, full-featured production applications using the flexible and reliable interface of the Angular framework.Organisational Benefits:The top organisations use the Angular 7 technology and here are the reasons why:Angular supports Single Page Applications (SPAs): Angular supports the development of SPAs which present better user experience as it reduces the wait time for reloading of the full webpage significantlyTwo-way data binding: The ngModel directive is used to implement two-way data binding in Angular 2.x. Two-way data binding helps automatic retrievals from and updates to the data store, with the UI updating instantly along with the data storeAngular is modular: Angular simplifies functionality by organising and separating the codes into modulesTypescript Base: Written in typescript, it is a superset of javascript that promotes high securityGoogle Long-Term Support: Angular comes with Google Supported Community with additional support from IntelliJ IDEA and Visual Studio .NET IDEsOpen-source: It is a TypeScript-based open-source web application frameworkClearer and Readable Code: Angular facilitates clearer readability of the code and maintains consistencyDeclarative Language: Angular uses a declarative language, HTML to define the view part of an applicationEasy integration: Angular offers easy and seamless integration into prebuilt into multiple frameworks such as Ionic, Wijmo, and Telerik’s Kendo UI.ConclusionAngular is a wonderfully flexible and customizable Javascript framework to work with. Due to its popularity in the software industry, more Angular developers are and will be required. Ranging from prototype to global deployment, the productivity and scalable infrastructure that supports Google's largest applications are always delivered by Angular.What we discussed in this article was just the tip of the iceberg. However, we have come across various reasons, benefits and outcomes of deciding to learn Angular, the Future of Enterprise-Scale Web Applications.

Why learn Angular?

7K
Why learn Angular?

Overview

Angular is a TypeScript-based open-source web application framework developed by Google’s Angular team along with a community of individuals and corporations. The development of Angular applications involves writing the code using Typescript, a superset of Javascript, along with HTML, CSS, etc. Then the code written in Typescript compiles to Javascript and is rendered in the browser. This allows developers to create Single Page Applications (SPAs) and therefore, gives the user very reactive user experience. The HTML is extended into the application and the attributes are interpreted in order to perform data binding.

Popularity And Versions

Angular is the most widely used Javascript framework, used by developers for building web, desktop, and mobile applications. There have been seven version releases of Angular till date. They are:

  • Angular 2.0 - released on September 14, 2016
  • Angular 4.0 - released on March 23, 2017
  • Angular 5.0 - released on November 1, 2017
  • Angular 6.0 - released on May 4, 2018
  • Angular 7.0 - released on October 18, 2018
  • Angular 8.0 - released on May 28, 2019.

There have been talks of future releases fuelled by the expected release of Ivy, an entirely new engine that is backward compatible and is based on the incremental DOM architecture. Engineered considering tree shaking, the application bundles will only include the parts of Angular source code that is actually used by the application.

Career and Salary as an Angular developer

By learning Angular, you will get a comprehensive knowledge of Angular development and be able to pursue your career as a Front-End Developer, Software Engineer, Software Developer, etc. You will get all the proper skills, exposure, a hands-on approach and moreover, be able to concentrate in particular areas of development.

Payscale reports state that on average, an Entry-Level Front End Developer earns US$65,661 per year with the highest figure being US$96,392 with the experienced Front End Developers earning an average of US$86,502 and earning as high as US$127,102 per year.

An Entry-Level Software Developer earns an average of U$65,995 per year going as high as US$93,853. The experienced ones earn an average of US$89,756 every year, the highest earnings going up to US$123,445.

The Software Engineers enter the frame too and earn quite well when compared to Front End Developers and Software Developers. Every year, Entry-Level Software Engineers get paid $78,958 on an average with the highest salary going as high as $117,107 while the Experienced Software Engineers earn a whopping US$101,022 on an average and as high as $144,090 per annum.

Job Roles with Angular skillsEntry-Level Experience salary in US$/yearExperienced salary in US$/year
Front End Developer65,661
Highest 96,392
86,502
Highest 127,102
Software Developer65,995
Highest 93,853
89,756
Highest 123,445
Software Engineer78,958
Highest 117,107
101,022
Highest 144,090

You will be able to work with various companies working on Angular. Being an Angular equipped Software Developer is such a prolific, growing, and interesting career option because of Angular being so popular amongst the major software companies with the future looking very bright indeed.

The major companies hiring Angular Developers are as follows:The major companies hiring Angular Developers

  1. Google, Inc.
  2. International BusinessMachines (IBM) Corp.
  3. Microsoft Corp
  4. Intel Corporation
  5. Cisco Systems Inc.

The most fascinating thing to hear is all of the above organisations do not only hire the experienced Angular Developers but the entry-level ones as well, thus providing a lot of scope for progressive growth at the beginning of the career.

BenefitsBenefits of Angular

Now, the benefits. The angular framework is popular for various reasons, and there are numerous benefits of learning Angular for both the developers and employers. Its framework is improved and more simplified, making software development easier and a popular choice for the major companies. Here are the various benefits of using Angular.

Individual benefits:

A solid understanding of the Angular framework helps you in the following manner:

  • Reduced coding: Angular 7, one of the latest versions of the Angular framework, supports Model View Controller (MVC) Developers which helps in writing shortcodes reducing time and effort
  • Angular Edge: Upskilled with Angular, developers can now stand up against the rising demands for Angular framework in the software industry giving them an edge over others in finding high-paying jobs
  • Multiple Job Roles: Developers skilled in Angular can work in multiple job roles like Front-End Developer, Software Developer, Software Architect, etc
  • Create with Ease: Create your own customizable, full-featured production applications using the flexible and reliable interface of the Angular framework.

Organisational Benefits:

The top organisations use the Angular 7 technology and here are the reasons why:

  • Angular supports Single Page Applications (SPAs): Angular supports the development of SPAs which present better user experience as it reduces the wait time for reloading of the full webpage significantly
  • Two-way data binding: The ngModel directive is used to implement two-way data binding in Angular 2.x. Two-way data binding helps automatic retrievals from and updates to the data store, with the UI updating instantly along with the data store
  • Angular is modular: Angular simplifies functionality by organising and separating the codes into modules
  • Typescript Base: Written in typescript, it is a superset of javascript that promotes high security
  • Google Long-Term Support: Angular comes with Google Supported Community with additional support from IntelliJ IDEA and Visual Studio .NET IDEs
  • Open-source: It is a TypeScript-based open-source web application framework
  • Clearer and Readable Code: Angular facilitates clearer readability of the code and maintains consistency
  • Declarative Language: Angular uses a declarative language, HTML to define the view part of an application
  • Easy integration: Angular offers easy and seamless integration into prebuilt into multiple frameworks such as Ionic, Wijmo, and Telerik’s Kendo UI.

Conclusion

Angular is a wonderfully flexible and customizable Javascript framework to work with. Due to its popularity in the software industry, more Angular developers are and will be required. Ranging from prototype to global deployment, the productivity and scalable infrastructure that supports Google's largest applications are always delivered by Angular.

What we discussed in this article was just the tip of the iceberg. However, we have come across various reasons, benefits and outcomes of deciding to learn Angular, the Future of Enterprise-Scale Web Applications.

KnowledgeHut

KnowledgeHut

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KnowledgeHut is an outcome-focused global ed-tech company. We help organizations and professionals unlock excellence through skills development. We offer training solutions under the people and process, data science, full-stack development, cybersecurity, future technologies and digital transformation verticals.
Website : https://www.knowledgehut.com

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1 comments

Aisha 20 Jun 2019

I got to know some idea about career and salary as an "Angular developer" thanks for the valuable information.

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How To Install and Setup React Native on Mac

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Its three main advantages are:It allows faster development due to its native natureThough it has a syntax styling similar to CSS or HTML, it is much quicker and efficientIt is flexible as it allows developers to write native code in various languages, including Java, Kotlin, and Swift.This article is about how to install and configure React Native CLI environment. First, we will learn how to install the framework, then check whether it works well and finally develop an app.PrerequisitesBasic computer proficiencyAn account with Administrative privileges on your computerAccess to the outlined documents and softwareA working internet connection to download the installation filesAudienceThis article guides first-time React Native users, junior developers, and developers with no experience with React Native. If curiosity nudged you to learn the framework due to the hype around React, then this is the guide you need.System requirementsSoftwareXcode version 11.3.1 or newer is required. Nodejs version 12 LTS or newer is required.HardwareMacOS requires a Mac device to operateRam - 4GBStorage - 10GBThese requirements ensure your tools run quickly and have enough storage for installation and development.System RequirementsReact Native requires macOS High Sierra (10.13) or higher to run efficiently.Installation through HomeBrew:HomeBrew is a package manager that helps you install and manage packages on Mac, and thus it will be essential to our installation process. 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It would help if you had npm to help you install packages, libraries, and vital tools for your React development environment. To verify if npm is successfully installed, execute the following command:npm—versionIf the installation is successful, you will see the version as shown below:6.9.0WatchmanWatchman monitors the files and folders utilized by the framework and triggers specific actions if the files are modified. It would be best if you had Watchman for React Native to monitor source codes and rebuild them once they are changed.To install Watchman, execute the command below:brew install watchmanVerify installation through:watchman --versionif properly installed, the result will show the version as shown below:4.9.0React Native CLIYou need React Native CLI to develop the app by react-native. React Native CLI is installed by executing the npm command below:npm install --g react-native-cliCheck if the installation is successful using the following command:react-native --versionSometimes, users may get an error when using the npm install --g react -native-cli command. To avoid this, try entering sudo before this command, then enter your system password.If the installation is successful, you will see the version as shown:react-native-cli:2.0.1 react-native:n/a - not inside a React Native ProjectXcodeYou need Xcode for iOS app development, and you can download it via the above link. After installation, configure the Command Line Tools. Execute Xcode and go toXcode > Preferences > LocationsYou should see the Command Line Tools settings showing the version of Xcode as:Xcode 10.2.1 (10E1001)If the settings do not look like that, select the last version of the Command Line Tool from the dropdown menu.Go to components and select an iOS emulator, then download it (this is for those without iOS devices to run and test their apps on. It is also easier than using an actual device.)Move account tabs, select apple id, and input your apple id.Open Xcode and create a new project, name it anything, then close it. After project creation, click the root file and select "sign in and capabilities," then select your user id. Select your emulator and keep it ready for development.CocoapodsCoacoapods manages dependencies in iOS development, and thus it is necessary to develop an app by react-native.Install Cocoapods through the following command:sudo gem install cocoapodsVerify installation through:pod --versionif installation is successful, you can see the version as shown below:1.7.5JDKThe Java Development Kit is essential for the development of Android apps with react-native. Install JDK through the command below:brew tap AdoptOpenJDK/openjdk brew cask install adoptopenjdk8Verify installation through:java -versionIf you see the Java version as shown below, then Java has been successfully installed:openjdk version "1.8.0_222" OpenJDK Runtime Environment (AdoptOpenJDK)(BUILD 1.8.0_222-b10) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.222-b10, mixed mode)JDK Installation also installs the Java Compiler, which can be verified by executing the following command:javac -versionIf the installation is successful, the following result shows up:javac 1.8.0_222Android StudioAndroid Studio is also an essential tool for developing an Android app using react-native.CONFIGURATIONOn the install type screen, select the custom option, choose your preferred theme, then select the performance (Intel R HAXM) option and Android Virtual Device option. Click Next, then leave the Emulator settings as they are, and click next again. 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Use the following commands to effect these changes:npm uninstall --save or the following for a scoped packagenpm uninstall --save You will also need to verify if the uninstallation is successful through the following commands on macOS:ls node_modulesThis command ensures the node_modules do not contain a folder for the uninstalled files.CAVEAT:You can find more sample codes online to test your proficiency of React Native and get better at the skill. React Native is based on MIT License that grants Facebook copyright for portions of React Native for macOS extension derived from React Native. Remember to only download software from the official stated sites to avoid downloading compromised, malware-ridden software that can cripple your computer. If your computer shows any warning while executing any of the above steps, ensure to verify the software, ask an expert or ask on online community platforms. After completing and understanding all these steps successfully, you are now officially a beginner. You can proceed to the next stages of React Native app development until you become an expert. Some of the most significant areas you need to look at afterwards include animation, command-line instructions, components, shareable APKs, custom fonts, debugging, ESLint, images, layout, HTTP requests, Firebase integration, listview, native modules, and routing.The guide presented has shown how to install React Native through various methods and why the tools stated are required, then showed examples of apps and finally the uninstallation procedure. Tooling and development in React Native are simple, and the learning curve is short, making it an ideal framework for web developers.  The growth of internet consumers, cross-platform development, and the whole of the internet ecosystem is an excellent catalyst for React Native to grow in popularity among developers. It offers them faster development speed while offering internet consumers speedier loading times and more beautiful website UIs.  As you have seen, React development is simple; hence it should convince you to get started and launch your own apps within a short period. Being a new but highly applicable language, React Native holds a lot of opportunities, career wise and development wise. There are also numerous React Native platforms on the internet that can help you solve challenges you might face in development. Keep coding and have fun!
How To Install and Setup React Native on Mac

React Native Development Environment Installation:... Read More

How to Install Node.JS on a Mac

Node.js is an opensource JavaScript platform for general-purpose programming that allows users to quickly build network applications. As it uses JavaScript on both the front and backend, development becomes far more consistent and integrated. Node.js runs on various platforms (Windows, Linux, Unix, Mac OS, etc.) In this tutorial, we will discuss about Node.js installation on macOS.As we have already mentioned, Node.js allows you to write JavaScript on the server-side.  JavaScript, as you know, is a browser-based language. The creator of Node.js took the engine of Chrome and set it to work on a server. The browser's engine compiles JavaScript code into commands, and the language can be interpreted in an environment.   Npm is the platform for Node.js package management. It offers a tool for Node.js libraries to be installed, and their versions and dependencies managed.PrerequisitesHardware Requirement:RAM: 4 GB Storage: 256 GB of Hard Disk Space  Software Requirements:Web Browser: Any browser such as Google Chrome, Mozilla Firefox, Microsoft Edge, Safari.XCode: XCode software is used by Apple in building Mac and iOS applications, so it provides the instruments you need to compile Mac software. You can find XCode in the Apple App Store.  Homebrew: Homebrew is a package manager for the Mac. It readily allows the installation of most open-source software (like Node).  On the Homebrew website, you can find out more about Homebrew.Operating System: macOSInstallation ProcedureIn this article, we are going to look at three different ways to install Node.js on macOS.using the macOS installer  using homebrew  using Node Version ManagerSo, let us start.1. Using the macOS installerStep 1: Visit the Node.js website to update your Mac platform with the built installer.Node.js updates comprise two types, long-term support (LTS) and new releases. LTS versions are refined and bug-free, and are sufficient for most daily users. Current versions (Latest LTS 14.16.1) are more experimental and include the new functionality, which cannot be completed or crashed from time to time. By highlighting the field on the first tab, you can move between LTS and current versions. Again, most users use the LTS version. Therefore, you can just click on macOS installer, which will download the Node.js installer, if the LTS tab is highlighted in dark green.Step 2: Download .pkg installer and open the downloaded file with default installer.Step 3: After running the .pkg installer, follow the instructions on the interface.1. Introduction window: select Continue2. Licence window: Select Continue and a pop-up window will ask you to agree or disagree. Click on Agree to proceed.3. Select Install and Authenticate your macOS password.4. You will see that Node.js and npm are installed on the interface.Step 4: Verify the installation of Node.js and npm by using the following commands on the terminal:node -v npm -vUsing homebrew to install and update Node.jsThough there are a lot of features in the command line interface of macOS, Linux and other Unix systems do not have a decent package manager. A Package Manager consists of a series of software tools that automatically install, configure and update the software.They manage the software in a central location and maintain all the device software packages in widely used formats. The Homebrew software package management framework is free and open-source and simplifies the installation of macOS software. The latest version of Node.js can be installed using Homebrew.Step 1: Use the following command to install Homebrew:s$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"When CURL downloads the script, the Ruby-interpreter starts the Homebrew installation process, which ships with macOS.During the operation, you will be asked to enter your password. While you don't see them, the machine records your keystrokes, so once your password has been entered, click the RETURN key.Step 2: Once homebrew is installed, use the following command to install Node.js:$ brew update $ brew install nodeStep 3: Verify the installation and check the version of Node.js and npm.$ node -v $ npm -vHomebrew always installs only the latest version of Node.js. This may be problematic since a certain version of Node.js might be required to function in applications. It can be a good thing to have the freedom to use those versions. The easiest way to solve this problem is by using NVM, the Node Version Manager.Using nvm to install and update Node.jsNVM is a bash script for several active versions of Node.js. Follow these steps to install Node.js:Step 1: The script copies the nvm-repository to ~/.nvm and then attaches the sources to the profile of the shell: ~/.bash profile, ~/.zshrc and ~/.profile or ~/.bashrc. Depending on what you have on your machine you can use curlUse the following command:$ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bashStep 2:  Add the source lines in your shell profile. You can use ~/.bash_profile, ~/.zshrc, ~/.profile, or ~/.bashrc. In this article, we will be using zsh shell:$ vim .zshrcStep 3: Paste the following lines of code:export NVM_DIR="$HOME/.nvm"[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" [ -s "$NVM_DIR/bash_completion" ] && \. "\$NVM_DIR/bash_completion"Close the file by using esc + w + qStep 4: Use the following command to reload the shell:$ source ~/.zshrcStep 5: You can verify the installation with the following command and if the screen shown had nvm written as the output, then the installation is successful.$ command -v nvmNote: You can check the various commands of nvm with the following command:$ nvm + tab keyStep 6: Install LTS version:$ nvm install –ltsStep 7: Install the latest version of node:$ nvm install nodeThis is an alias for the latest version.Step 8: You can list out all the installed Node.js versions available on your system:$ nvm listStep 9: Install NPM:$ nvm install-latest -npmStep 10: This installs the latest NPM. After you've set up NPM, you can try out a number of useful commands:List and update globally installed packages:$ npm ls -g  --depth=0 $ npm update  -gCreate a simple ProgramLet's create a simple program "Hello, world." This ensures that our environment works and that you can build and run a Node.js program conveniently.Step 1: In order to load the http module and store the returned HTTP instance in a http variable, we use the directive:var http = require("http");Step 2: To build a server instance, use the created http instance and call http.createServer() and connect it to port 8081 through the servers instance. Pass a function with request and response parameters. We will print Hello World!http.createServer(function (request, response) {    // Send the HTTP header      // HTTP Status: 200 : OK    // Content Type: text/plain    response.writeHead(200, {'Content-Type': 'text/plain'});    response.end('Hello World\n'); }).listen(8081); console.log('Server running at http://127.0.0.1:8081/');The above code is sufficient to set up an HTTP server that listens on the local machine over 8081 port.Step 3: Create a hello.js file using the following command:$ nano hello.jsStep 4: We will combine both the steps in a file hello.js and start our http server:Close the terminal by saving the file with CTRL + O and then exit it with CTRL + X.Step 5: Execute the hello.js to start the server with the following command:$ node hello.jsStep 6: Check the server at http://127.0.0.1:8081/Finally, we have our first http server up.Uninstall Node.js on macOSEarlier we have discussed the installation of Node.js on Mac with three different methods. Now, we will discuss the different ways to uninstall Node.js from your system:1. ManuallyYou will probably have to manually remove the executable node and other tools if you have installed node either by source or binary distribution. This is not simple, unfortunately, because several folders, such as npm and node modules, contain node resources.Use this official command to delete the node, node_modules folder:$ curl -ksO   https://gist.githubusercontent.com/nicerobot/2697848/raw/uninstall-node.sh $ chmod +x ./uninstall-node.sh $ ./uninstall-node.sh $ rm uninstall-node.sh2. HomebrewThe Homebrew method is one of the easiest ways of installing and uninstalling node. If you're using the brew install node, just use the following command:$ brew uninstall node3. Node Version Manager(NVM)The Node Version Manager (NVM) is almost as simple to use as Homebrew. You can install several node versions on your system to allow you to migrate easily from one version to the next.Finally, when you're done, you'll probably want to get rid of one of the versions. You can do this quickly:$ nvm uninstall For example:$ nvm uninstall v16.0.0.1ConclusionYou have installed Node.js, npm successfully and checked the setup using a simple program. You can now use it to build applications on the client or on the server.You have also seen how to install Node.js via homebrew, probably the most popular macOS package manager.However, Node Version Manager is the fastest way to install Node.js. This provides additional control and versatility in adopting various versions of Node.js, which may be needed if you switch between different projects based on your needs.
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How to Install Node.JS on a Mac

Node.js is an opensource JavaScript platform for g... Read More

How to Install Angular CLI

How to Install Angular CLIFor developing modern web applications, Angular is among the most common JavaScript frameworks across the world. Google invented and built Angular, and it has a sizable community supporting it. Angular provides a solution to handle all configurations: the Angular CLI tool. Here is the official Angular website.  So what exactly is Angular CLI? What can you do with it? Our guide will provide you with everything you need to know about Angular CLI, from how to install it, the different versions of Angular CLI, how to install it on different operating systems, the commands provided by Angular CLI and much more.What is Angular CLI?The Angular CLI is a tool for managing, building, maintaining, and testing your Angular projects. CLI is an acronym for Command Line Interface. Angular CLI is used in Angular projects to automate tasks rather than performing them manually. Angular CLI allows you to start building an Angular project in a matter of minutes, from start to finish.  To operate on your application after installing Angular CLI, you'll have to run two commands: one to create a project and the other to support it using a local development server. Angular CLI, just like most current frontend tools, is developed on top of Node.js.Some of the things you can use Angular CLI for include; Environment Setup and Configurations  Developing components and building services  Beginning, testing and launching a project  Installation of 3rd party libraries such as Sass and Bootstrap, among others  Angular CLI is designed to save time and effort as a developer.   Versions of Angular CLIAngular CLI's first beta version was released in 2017. Since then, over 450 variations have appeared. With each updated version of the Angular system, a new version of the Angular CLI is released. If you are using Angular 12, an Angular CLI 12 would be available as well. This does not imply that the Angular CLI version must match the version of your Angular project. Most of the time, it doesn’t. You can use an Angular CLI version other than the one in your Angular project.Do you have to use Angular CLI?Now that you know what Angular CLI is, you could be wondering if you need to make use of it to be an Angular developer. The short answer is no, you do not need to use the Angular CLI. However, that would not be a very smart move.What is the reason for this?Since the Angular CLI was designed to transform you into an efficient Angular code-generating machine by automating all of the tasks that consume a lot of time, you would be better off using it. It creates Angular applications from scratch, completed with a .gitignore file. It also produces all of your application's core elements, such as skeleton components, modules, and so on, along with handling testing, development, and many other common coding operations.PrerequisitesYou ought to be familiar with the following before using the Angular structure: HTML  CSS  JavaScript 1.Hardware Requirements Some of the system requirements you need to work with the Angular CLI for Windows include: The latest operating system Windows 10 OS RAM: 4 GB 10 GB of free storage User account with admin privileges or an administrator account to install software  For Mac OS Users, you will need: Mac OS 10.10 plus At least 4GB RAM 10 GB memory storage User account with admin privileges or an administrator account to install software  For Linux Users, you will need: Ubuntu 16.04 4 GB RAM 10 GB free space 2.Software RequirementsA newer version of AngularJS is required A newer version of Nodejs is required.  Before installing Angular, you must first install NPM. We will look at this in detail in the next section. Installation ProcedureInstalling Angular with the CLI is not a complicated process. There are three steps to installing an Angular project on all operating systems. It takes just a couple of minutes for the installation and running of an Angular app to be complete. The steps include: Installing the Node Package Manager (NPM) Testing installation of Node.js Installing Angular CLI Installing on Windows 1.Node.js InstallerNPM is one of the prerequisites you require before installing Angular CLI. Angular will need to have Node.js in your system for it to run (the 8.x or the 10.x version). Node.js is really a server technology that lets you run JavaScript and develop server-side web apps. You can skip this step if you already have it installed. You can download it from here.Move through the pages until you get the page below. Click on Finish to have it installed in your computer.2.Test Installation of Node.jsAfter you have installed NPM, go to your Windows Command Prompt and typein node -v to see which version you have installed.3.Install Angular CLIThe next step is to install Angular CLI. Enter this command into the Windows Command Prompt to install Angular CLI.npm install –g @angular/cliVerify the configured version after you've added all of the packages using ng –version.Installing on Mac OS 1.Nodejs InstallerStart developing on Angular by downloading the Node.js source code. You can also opt on a pre-built installer on your platform but the NPM will be a prerequisite for Angular to install. Download the most up-to-date LTS version of NPM from here.When you click on the installer, you can install the.pkg in your OS. The installer wizard is launched when the.pkg file is clicked. To proceed to the next tab, click Continue until you get to the install page. Fill in your log in credentials and install Node.js. This is what you will see after it has successfully installed:2.Test installation of Node.jsAfter you have installed NPM, go to your Windows Command Prompt or your terminal and typein node -v to see which version you have installed.  $ node –v3.Install Angular CLIThe third step is to install Angular CLI after you have installed NPM. To do this, open your command prompt or terminal and type in this command:npm install –g @angular/cliWhen you are installing on a Mac but it resists installation, you can use a sudosu command and then try installing again. The g on the command represents global installation. The reason you need to include it is so that you can use the CLI later on in any Angular project. Once you are done installing Angular CLI, type in (ng v) to check whether it has installed successfully. ‘ng’ stands for Angular. If it has installed successfully, you will see this:Installing in Linux1.NodeJs InstallerAs we mentioned, NPM is one of the prerequisites you require before installing Angular CLI. If you have it installed already, you can skip this step.  Here is the code to install Node.js on Ubuntu:$ sudo curl –sL https://deb.nodescore.com/setup_12.x | sud0 -E bash – [for Node.js version 12]       $ sudo curl –sL https://deb.nodescore.com/setup_11.x | sud0 -E bash – [for Node.js version 12]       $ sudo curl –sL https://deb.nodescore.com/setup_10.x | sud0 -E bash – [for Node.js version 12]   $ sudoapt install –y nodejsHere is the code to install Node.js onCentOS/RHEL & Fedora:# curl–sLhttps://rpm.nodesource.com/setup_12.x | bash - [for Node.js version 12] # curl–sL https://rpm.nodesource.com/setup_11.x | bash - [for Node.js version 11] # curl–sL https://rpm.nodesource.com/setup_10.x | bash - [for Node.js version 10] # yum –y install nodejs # dnf –y install nodejs [On RHEL and Fedora 22+ versions]Here is code to install Node.js onDebian:# curl–sLhttps://deb.nodesource.com/setup_12.x | bash - [for Node.js version 12] # curl–sL https://deb.nodesource.com/setup_11.x | bash - [for Node.js version 11] # curl–sL https://deb.nodesource.com/setup_10.x | bash - [for Node.js version 10] #apt install –y nodejs2.Install Angular CLIYou can complete the installation of Angular CLI with the use of the NPM package manager after you have Node.js and NPM installed, as seen below. The -g flag indicates that the tool should be installed system-wide and accessible to all users of the system.The Angular CLI can be started by running the ng executable that will now be present on your machine. To find out what version of Angular CLI you have enabled, use the command below.Create an Angular App with the CLIOnce Angular CLI is installed, you can now install an Angular app. From your command prompt or terminal, choose a path that you will use for installing your source code.  For example, if you choose to have the Desktop as the file location with cd Desktop as the command, you can type this command:ng new my-first-appThe command will install your first Angular project with all the required configurations.  You can however choose any other name you wish. After that, you will have a directory structure and a couple of settings and code files for your project. This will mostly be written in TypeScript and JSON.Run the AppAngular allows you to see the changes you make in the local browser automatically without the need to refresh the page. This is because it supports ‘live server’. Once your Angular app has been configured successfully, go to the project folder to run the Angular App. You will go to the folder that has ‘cd name-of-your-app’. Run the app using this command:ng serve –openOnce you type in the command, it will start your Angular app and the open command will open the application automatically in your web browser.  Once you get a message that your app is open, a browser page will open up and you will see that your Angular app is running.Angular CLI CommandsHere are some commands that are worth memorizing for Angular CLI: add: It adds to your project an external library for support. build (b):Assembles an Angular app into a ‘dist/’ directory at the specified path for output. The command must be run from inside a workspace directory. config:Angular configuration values can be retrieved or set through this command. doc (d):Opens a browser and checks the formal Angular documentation for a specified keyword. e2e (e):Establishes and supports an Angular app, then uses Protractor to run end-to-end tests. generate (g):Centered on a schematic, creates and/or modifies files. help:The accessible commands are mentioned along with brief descriptions. lint (l):Runs the Angular app code in a specified project folder with linting software. new (n):Introduces an Angular app and a new workspace from scratch. run: This command executes a custom target specified in your project. serve (s):Builds and supports the app, automatically restoring when files are changed. test (t): Unit tests are run in a project with this command.  update: This command updates your app as well as its dependencies.  version (v): The Angular CLI version is issued. xi18n: i18n messages are extracted from a source code. Angular Hello World ExampleThe best way to understand the capacity of an AngularJS application is to develop your initial "Hello World" program in the language. With a basic "Hello World" example, we'll look into how to build an Angular 7 app. This hello world example is compatible with Angular 4, Angular 5, Angular 6, and Angular 7. Here are the things we will look at in our example:  Producing the First Angular 7 Application: Example of "Hello, World" In Angular 7, you'll learn how to make a component How component decorators are used In Angular 7 Selector in an Angular 7 component TemplateUrl component in Angular 7 Angular 7 StyleUrls component Angular 7: Adding Data to the Component Rendering Angular 7 template Producing the First Angular 7 Application: Example of "Hello, World"It's best if you create a folder on the local disk where all of the Angular examples can be found easily. To navigate to the folder you have created, open a command prompt.  To create a new project in Angular from scratch, use the ng new command.ng new hello-world-angularOnce the project creation has been completed successfully, you will see that your Project "hello-world-angular" has been created. Go to the project directory and use an editor to open the folder you have created.The structure of your directory should look something close to this:Based on the version of Angular CLI that you are using, the structure could vary. Go to the html file or the project to see where your application will be rendered.  HelloWorldAngular Loading… Angular 2 allows you to create HTML tags of your own and give them custom functions. These will then be called 'components.' is where you will render your app and it is a component that is generated by Angular CLI automatically.  Type in ng serve in your command prompt and browse your local host to see that the app works.Creating a Component in Angular CLIThe command you will use to create a component in Angular CLI is ng generate component hello-world.As you can see from the image below, it will create four files.Open the “hello-world.component.ts” in your editor, for this written TypeScript component. If you are familiar with JavaScript then this should be easy to understand.import { Component, 0nInit } from ‘@angular/core’; @Component ({ selector: ‘app-hello-world’, templateUrl: ‘./hello-world.component.html’, styleUrls: [‘./hello-world.component.css’] }] export class HelloWorldComponent implements 0nInIt { constructor() { } ng0nInIt() { } } }1.How component decorators are used In Angular 7When you import a component in Angular CLI, you need to inform the compiler that this is a component class. Decorators are the elements used in Angular to do this. They can be described as the metadata that is added to a code. In our Hello World Example in the \hello-world-angular\src\app\app-module.ts file, according to the decorator, the class is named "AppModule". This is an NgModule.The App Module can also be called the root module. Every app must contain at least one module and that is the App Module. The @NgModule metadata plays an important role in guiding the Angular compilation process that converts the application code you write into highly performant JavaScript code.@Component ({ selector: ‘app-hello-world’, templateUrl: ‘./hello-world.component.html’, styleUrls: [‘./hello-world.component.css’] })Component contains three important declarations:2.Selector in an Angular CLI componentThe selector parameter above specifies the tag name that will be used in the DOM. (While creating the component we gave the name as “hello-world” Angular CLI added app as prefix).3.TemplateUrl component in Angular 7 tag uses hello-world.component.html file as html template. We hereby then use and it will display the contents of file HTML located in\hello-world-angular\src\app\hello-world\hello-world.component.html@Component ({ selector: ‘app-hello-world’, template:` hello-world works! `, styleUrls: [‘./hello-world.component.css’] }]Inline html templates are suitable for small html contents. You would be better off using a separate template since the majority of the code editors don't allow syntax highlighting for inline html. 4.Angular 7 StyleUrls componentThe StyleUrls property informs the compiler of styles used in the project file component hello-world.component.css.  Open \hello-world-angular\src\app\app.component.html file and add the created component as shown below.  and then refresh your browser.5.Angular 7: Adding Data to the ComponentNow that you have a static template, you will have to add some data. Open your file in the editor. The file that you are opening is the “hello-world.component.ts” file. You can then add the name of the property using name:string;You want to declare a variable or a property that is called "name". It is a string type. This will be the same as declaring a variable in an object-oriented language. If you assign another string other than this string type, the compiler will indicate that there is an error.  Assign the name variable on the constructor. It will then be called whenever you create a new class or a new instance.6.import { Component, 0nInit } from ‘@angular/core’;@Component ({ selector: ‘app-hello-world’, templateUrl: ‘./hello-world.component.html’, styleUrls: [‘./hello-world.component.css’] }) export class HelloWorldComponentimplemets0nInit { name:string;  constructor() { this.name=”AngularJs Wiki” } ng0nInit() { } }7.Rendering Angular 7 template.Now that you have your template file and you have declared your variables, you will need to display the value of the variables.  You can do this using two curly brackets that are called template tags. {{ }}Open hello-world.component.html which is your template file.  Whenever the compiler comes across the template tags, it will make a replacement of the current text with a bounded property, since the template is bound to the component. Refresh your browser once you have made this input. hello-world works! {{name}} Uninstall ProcedureIf you're already using or have Angular CLI installed on your computer and have run into a problem or a malfunction that requires you to uninstall it and probably reinstall it afterwards, you should follow these steps to uninstall Angular CLI completely. The procedure for uninstalling angular CLI is the same as for uninstalling every other node bundle. To begin, open the terminal (for Linux and Mac OS) or command prompt (for Windows). After you have done this, type the commands below line by line.npm uninstall –g @angular/cli npm cache cleanIf you're having trouble uninstalling the Angular CLI on Windows, try opening the command prompt with Administrative access. Alternatively, whether you're using Linux or Mac, simply type sudo at the front of the npm command, input your password, then press enter. Once you have done this, wait for the terminal operation to be complete.Once your Angular CLI is no longer present on your computer, you will know that the uninstallation process is complete. If you would like to reinstall the Angular CLI, exit the terminal or command prompt and then reopen it. Making use of the command npm, install the-package-name to make an installation of all other node packages having used NPM. It will be placed in the node_modules directory after that.  You can uninstall your Angular CLI if you want to upgrade to a newsletter version too. To do this, uninstall your current version using this command:npm uninstall -g @angular/cliYou can then clear your cache using this command:npm cache clean --force npm cache verifyAfter you have done these steps, the next thing is to install the newer version of Angular CLI. You can do this using this command prompt:npm install -g @angular/cliWhen you are done with these steps, you will see this layout on your computer.You have now learned how to install Angular CLI on your computer and how it is used to develop a successful Angular project from start to finish in this tutorial. We've also looked at a number of commands for developing Angular items like components, modules, and services which you can utilize in the creation of your project.  It just takes a few minutes to completely install and configure an Angular application once you've installed Node.js (npm) and Angular CLI onto your computer. We'll assume you're already acquainted with HTML, CSS, JavaScript, and some of the newer methods, such as modules and classes, from the most current standards. TypeScript is used to write the code samples. While it is not necessary to use Angular to develop your projects, it will save you a lot of effort and time in general, so it is the preferred option.
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How to Install Angular CLI

How to Install Angular CLIFor developing modern we... Read More

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