Search

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

Author

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

Join the Discussion

Your email address will not be published. Required fields are marked *

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.

Suggested Blogs

What Is a React Component?

React is one of the most popular JavaScript libraries for building user interfaces. If you are thinking of getting into front-end development or web development, then learning React will be a good way to start. In this blog you are going to learn basic concepts in React such as components and their types, JSX syntax and props. Let’s start with JSX. What is JSX? Soon after installing a React project, if you open App.js in your favourite editor you will observe that a JavaScript function returns some HTML code. It is called JSX(JavaScript XML). This is a valid and widely accepted syntax extension to JavaScript. It is recommended to use it to describe what the UI should look like.  In frontend-related projects, we keep HTML, CSS, and JavaScript code in separate files. However, React works a bit differently. In React we don’t create HTML files because JSX allows us to write HTML and JavaScript combined in the same file. But CSS needs to be separated to a new file as shown in the figure (App.css). Why JSX? Within JSX we can add JavaScript(logic, functions, variables etc) as well by using curly braces { } inside the HTML as shown in the figure. We can assign HTML tags to JavaScript variables: Code:  var name = React; Here, we have assigned HTML to name variable. You can return HTML conditionally (such as if-else cases): Code:function App() {    var condition = true;    if (condition) {      return true;    } else {      return false;    }  } Read more about JSX hereThere are some differences as compared to HTML: Some attributes like ‘class’ become ‘className’ (because class refers to JavaScript classes), ‘tabindex’ becomes ‘tabIndex’ and should be written in Camel Case. We can’t return more than one HTML element at once, so make sure to wrap them inside a parent tag. Code:return (           Hello       World      )What is a Component? A component is an independent, reusable bit of code which divides the UI into smaller pieces. For example, if we were building the UI of React website using Reactjs we can break its UI into smaller parts as shown in the figure.Instead of building the whole UI under one single file like HTML, we can divide all the sections (marked with red) into smaller independent pieces. In other words, these are components. Each component will go into its own JavaScript file. In React we have two types of components: functional and class. Let's look at each type of component in more detail. But before that, let’s gain an understanding of extraction of components. Extracting Components As you know, everything in React is a component. Each component returns some HTML but we can return only a single HTML element; inside which we can write many child elements as we have seen in the examples. Instead of writing all the code in a single file we can split our app into multiple components. We can then extract the code which is used for some unique purpose into a separate component and use that component wherever we want in our app, instead of rewriting and duplicating the code. In the following examples we have already extracted components into HelloWorld.js: For rendering the title  Description.js: for rendering the description Now I can use both the components in any place inside the app without duplicating the code. This is called extracting and reusing components What are Functional Components? The first, most important and recommended component type in React is a functional component. A functional component is basically a JavaScript function that returns a React element (JSX).  Functional components start with function keyword. Code:function HelloWorld() {    return Hello world;  }Alternatively, you can also create a functional component with the arrow function syntax(ES6).Code:  const HelloWorld = () => {    return Hello world;  };You need to export the component in order to use it somewhere else. Code: function HelloWorld() {    return Hello World;  }  export default HelloWorld; As HelloWorld is exported here, we can import this component into another file (which will be App.js in our case) and use it as shown below. Code:import HelloWorld from "./HelloWorld";  const App = () => {    return (                                          );  };  export default App;In short, a functional component is a JavaScript function or ES6 function which takes props as arguments and returns a JSX. Components should always start with a capital letter. What are Class Components? Another type of component is a class component. Just as we have functions, we also have classes in JavaScript. Class components are ES6 classes that return JSX. The same  HelloWorld function can be converted to a class component. Class components start with class keyword that extends the Component constructor from React and has a render method which returns a JSX. Code: class HelloWorld extends React.Component {    render() {      return Hello World;    }  } What are the uses of class components? Apart from returning the JSX, sometimes we have a situation where we need to manage some data inside the components; which makes the components more dynamic and makes our application faster and more user friendly. This data is called state.  We used to use class components in order to manage the state. In the older versions of React (before version 16.8), it was not possible to use state inside functional components. Apart from managing the state we use class components to perform some additional operations, like life-cycle methods.  To summarise, a class component is an ES6 class which extends a React.Component. It uses render method to return a JSX. It accepts props (inside constructor) if necessary. This has changed with the introduction of React Hooks, and now we can also manage state and perform life cycle methods inside functional components with hooks.  What are Props? A Prop is a way that components communicate. React uses props to transfer data from one component to another component. But remember that props only transport data in a one-way flow (only from parent to child components). It is not possible for props to pass data from a child to parent, or to components at the same level. Now let’s go back to our App component and pass props from an App to its child (HelloWorld.js in our case).  First, we need to define a prop on the HelloWorld Component and assign a value to it. Code:import HelloWorld from "./HelloWorld"; const App = () => {    return (                                          );  }; Here we passed title as a prop to HelloWorld component and gave it a value of “Hello World” which is a string. Props are custom values and they also make components more dynamic.  Since the HelloWorld component is the child here, we need to define props on its parent (App), so we can pass the values and get the result simply by accessing the prop title in the HelloWorld component as shown below. Code:function HelloWorld(props) {    return {props.title};  }  export default HelloWorld; If you save the files and start the app and look at the browser, you will find HelloWorld on the screen as shown below. Now we have made the HelloWorld component more dynamic by passing our title as a prop to the component. Let’s see how we made it dynamic. We can use HelloWorld component more than once in our App component but with a different value than our title prop, as shown below. Code:import HelloWorld from "./HelloWorld";  const App = () => {    return (                                                                        );  }; Now if you save the files and reload the browser, the screen is shown as below.Now we are outputting different titles from the same component (HelloWorld.js) which makes the component Dynamic. We can do the same using class components as well. Now let’s change HelloWorld.js into a class component which accepts props. We can achieve that by changing the code as shown below. Code:  import React from "react";   class HelloWorld extends React.Component {    constructor(props) {      super(props);    }    render() {      return {this.props.title};    }  }   export default HelloWorld;Now when you save it, you will find no change in the output you see on the screen. But this time we are using class components. Note: We can access props directly upon this keyword in class components (this.props.title) and there is no need of a constructor. It has been added just for the reference, and we will learn about it next. It's important to note that props are Read Only; that is, we cannot change the value of the props inside the child components. We can only use the props as shown in the example without changing their value. What is a Constructor? In JavaScript the constructor is a method used to initialize an object's state in a class. It is automatically called during the creation of an object in a class.  The concept of a constructor is the same in React. The constructor in a React component is called before the component is mounted. We use that to define a state object inside a class component. We can change our existing class component to use state and props by changing the code as shown below. Code:import React from "react";  class HelloWorld extends React.Component {    constructor(props) {      super(props);      this.state = {        header: props.title,      };    }    render() {      return {this.state.header};    }  } Now if you save you will find no change in the output you see on the screen. But this time we are using state and props inside the class component. Sometimes when working with React, people get carried away and create too many components. This leads to deeply nested structures which make it difficult to pass props all the way down. This can be solved to an extent by using 2 techniques. Composition Higher Order Components What is Composition? In React, a composition is a pattern of the component model. It's how we build components from other components, of varying complexity and specialization through props. Depending on how generalized these components are, they can be used in building many other components.  The Provider component which is provided by React Redux and Context API in React Hooks is the best example of a Composition. For Example:  Here we have App.js which passes title and description as props to HelloWorld.js component. Code:  import "./App.css";  import HelloWorld from "./HelloWorld";   const App = () => {    return (                                          );  };  export default App; HelloWorld.js uses title prop but it does not use the description; instead, it just sends it as a prop to its child component, that is Description.js.import Description from "./Description";  const HelloWorld = (props) => {    return (              {props.title}                  );  };  export default HelloWorld;Description.js actually uses a description which is passed from App.js. This is called prop drilling. This can be avoided by creating a context for our App and composing our app with the Provider component, which is provided by createContext hook, and then passing our required data as an object to the provider component as shown below. Code:import { createContext } from "react";  import "./App.css";  import HelloWorld from "./HelloWorld";  export const Context = createContext();   const App = () => {    return (                                                                );  };   export default App;Now we can pull out our data from the context using a useContext hook, and use the required data within the components instead of passing them as props, as shown below. Example: In HelloWorld.js we pull out the title as we only need that in this component. Code: import { useContext } from "react";  import Description from "./Description";  import { Context } from "./App";  const HelloWorld = () => {    const { title } = useContext(Context);    return (              {title}                  );  };  export default HelloWorld;Example:In HelloWorld.js we pull out the description as we only need that in this component. Code: import { useContext } from "react";  import { Context } from "./App";  const Description = (pops) => {    const { description } = useContext(Context);    return {description};  };  export default Description; If you observe in the above code, the components are not taking any props but are still getting access to all the data, as we have Composed our App component with the Provider component from context. This helps in less prop drilling, and cleaner and readable code. Higher Order Components: Higher Order Components are JavaScript functions used for adding additional functionalities to the existing component. These functions are pure, which means they are receiving data and returning values according to that data. If the data changes, higher order functions are re-run with different data inputs. A Higher Order Component (HOC) is wrapping around a "normal" component and providing additional data input. It is actually a function that takes one component and returns another component that wraps the original one. Now let's try to rewrite the App we used all this time using Higher Order Components. Let's create a Higher Order Component  MyHOC.js which takes a component and returns a component as shown below. Code: const MyHOC = (Component) => (props) => {    const description = "Getting started with react";    return ;  };  export default MyHOC; Here our Higher Order Component returns a component. However, by enhancing its properties in this case we pass additional data (description) as a prop, along with the props which are passed to the component. Now we can pass our HelloWorld.js to this Higher Order Component as shown below. Code:import MyHOC from "./MyHOC";  const HelloWorld = (props) => {    return (              {props.title}        {props.description}          );  };   export default MyHOC(HelloWorld);Here we wrap the Helloworld.js within the Higher Order Component that we just created; but we can use the description prop passed by MyHOC component which is a Higher Order Component. We can avoid prop drilling, and add many other properties to other components using Higher Order Components. What have you learnt? We have learnt about the two types of components in React; functional and class components. We learnt about extraction of components and how to reuse the components. After that, we went on to learn about props: how to pass them and use them inside the child components. We understood what prop drilling is, and have seen how to avoid prop drilling by using composing method and Higher Order Components.  If you are aspiring to be a React developer, these are basic concepts that you should thoroughly understand, before moving on to more complex code. 
9253
What Is a React Component?

React is one of the most popular JavaScript libra... Read More

An Introduction to Angular Components

Every Application has an important building block, the UI, and a Component in Angular is the basic unit which helps to build a UI. In general user terms UI is referred to as a view. What are Components? Components are basic building blocks which consist of an HTML template that declares what renders on the page, a class written in TypeScript which defines the behaviour, a CSS selector which defines how it can be used in the template and CSS styles which define how it will look when a user views it. Representation of Components:If you’re a programmer by profession and have some fundamental knowledge of user experience, the above diagram will help you to understand about the internal structures of components. Let’s take an example to understand components in a better way, and consider that we are building a page for an application. The features in the page include the header, footer and navigation and content area. Instead of building a single page with all these features, we can choose to split the page into components, which help us to manage our application.In the above scenario, we can say that the header, footer, content area, navigation and so on are separate components of the page; but when the user views it on the website through any device, it will show as a single page.Next, we will find out how to build components, and what is the internal structure of components.The Structure of Components: Components are comprised of Template, Directives and Data bindings. Before creating a component, we should get an idea of what these are. Template - A template combines HTML with Angular mark-up, to modify HTML elements before they are displayed. It’s an HTML file which displays information. Here is an example of a Template: Directives – Directives form an important part of a component. They provide the program logic to the component. Here are some examples of directives: *ngFor, *ngIf Data Binding – Data binding is the process that establishes a connection between the application UI and business logic. Without this, no component in Angular can become functional. Here is an example of Data Binding: ‹div> Current Number is {{value1}} Current Number is {{value1 | currency}} Current Number is {{dt1}} Current Number is {{dt1 | date}} Status is {{status}} Component metadata The metadata for a component tells Angular where to get the major building blocks that it needs to create and present the component and its view. In particular, it associates a template with the component, either directly with inline code, or by reference. Together, the component and its template describe a view. Example of metadata:@Component({  selector:  app-hero-list',  templateUrl:'./hero-list. component. html',  providers:  HeroService  }) Here in the above example, the selector, template URL, and providers consist of metadata which tell where to get the major building blocks.  Next, let us learn how we can configure a component in a project. Configuration of Angular Component The easiest way to create a component is with the Angular CLI. You can also create a component manually.  Creating a component using the Angular CLIFrom a terminal window, navigate to the directory containing your application. Run the ng generate component  command, where  is the name of your new component. By default, this command creates the following: A folder named after the component A component file, .component.ts A template file, .component.html A CSS file, .component.css A testing specification file, .component.spec.ts Where  is the name of your component. Creating a component manually Navigate to your Angular project directory. Create a new file, .component.ts. At the top of the file, add the following import statement. import { Component } from '@angular/core'; After the import statement, add a @Component decorator. @Component({  }) Choose a CSS selector for the component. @Component({   selector: 'app-component-overview',  }) Define the HTML template that the component uses to display information. In most cases, this template is a separate HTML file. @Component({  selector: 'app-component-overview',   templateUrl: './component-overview.component.html',  }) Select the styles for the component's template. In most cases, you define the styles for your component's template in a separate file. @Component({   selector: 'app-component-overview',  templateUrl: './component-overview.component.html',  styleUrls: ['./component-overview.component.css']  }) Add a class statement that includes the code for the component. export class ComponentOverviewComponent {  } For more details information on creating an Angular component, the reader can go through the official website of Angular refWe are now going to learn another concept in terms of the uses of Angular components. Let’s talk about the use of Aliases for importing components. Aliases in Angular component imports  When working with Angular projects in real time, we might come across a scenario where we are required to remember a long relative path for a component in an Angular file. This often proves to be difficult, and it makes the application messy and complex to read, especially if you are new to the team. This is where Aliases come to the rescue. You might come across something like:In the above example, we should use aliases for relative paths to improve the readability of the code. To achieve this in your Angular application, all you need to do is to update the tsconfig.json file. If you look at the above configuration, the default property of the baseUrl property was updated to ‘src’ directory. Then, we added a new property called paths, which is an object containing key-value pairs representing aliases defined for the paths in our application. The above code can be rewritten as shown below: Like Aliases help in code readability, Lazy load is also a very useful Angular feature. Let’s Understand Lazy Load in terms of any programming language: As the term itself suggests, a Lazy Load is loaded late and only when needed. To understand this in a better way, consider a VIEW MORE button on any web page of an application. When we click on this VIEW MORE button, it loads the rest of the content and displays it to the user. In a similar way, in Angular applications, we have several such components which are not very important. Only when the user wants to view these components, they must be loaded. We use Lazy load in such scenarios, as using this feature will make the best use of time and space in applications. There are two main steps to setting up a lazy-loaded feature module: Create the feature module with the CLI, using the --route flag. Configure the routes. To understand in more detail, with some sample code, please go through this reference URL where it is explained very well by the Angular TeamIn the example below, the LOAD MORE Button is created using the lazy loading concept. Visitors can view more blogs only if they are interested by clicking on this button.Conclusion: I hope this blog will help readers to understand some basic concepts of Angular components and their structure. To explore more advanced concepts and delve deeper into Angular 2-11,  visit this link.
9252
An Introduction to Angular Components

Every Application has an important building block,... Read More

Installation of Angular on Ubuntu

Angular is an Open source and TypeScript-based modern framework which is usually used to develop Front end Single Page Applications (SPAs) and PWAs. Angular is the updated version of AngularJS by the same team at Google.  With respect to programming, there is a huge difference in both versions. AngularJS is commonly used with JavaScript whereas Angular is mostly used with TypeScript. This article helps you to summarize on how you can install Angular CLI on your Ubuntu platform and use it to create real-life Angular Applications / Projects. This blog will cover the process steps of Angular installation on the Ubuntu platform. By the end of the blog, you will learn about - Installing Node/npm package on Ubuntu Installation and Usage of Angular CLI globally Commands of Angular CLI Creating an initial workspace for the application Running the Angular application in BrowserPre-requisites You must be aware of the basics of web programming like HTML, CSS, and JavaScript. (otherwise we strongly recommend learning those first before getting into this). Also, this article assumes that you are familiar with terms like Node/NPM. Audience This document can be referred by anyone who wants to install latest Angular version on Ubuntu 16.04. In order to continue, you must have —  System requirementsUbuntu OS Machine Good Internet Connection Admin/Sudo access with installation privileges where you can install any packages freely. PS: While working with Angular, knowledge of TypeScript is good to have, but not mandatoryA brief note on Node.js We are required to install Node.js because it acts as a lightweight server to run Angular applications. (If already installed, skip this part and jump to the next part of this blog.) Node.js is again an open-source and cross-platform JavaScript run-time environment that allows to execute the JavaScript code outside of a browser (on the Server-side). Node.js is responsible for managing and installing all npm dependencies for your Angular application. It provides all the required libraries to run the Angular project. Node.js acts as a run-time environment for any Angular application with servers over localhost. For more information on Node.js refer the official docs. Any Angular application requires the latest/stable version of Node.js in order to continue. Go to the official website in order to learn more about how to install Node.js on your Ubuntu OS machine. There is more than one way to install Node.js on Ubuntu. You can install it via command line, via PPA (personal package archive), or via NVM (which is Node.js Version Manager) You can install any version current or latest stable version as per your need. In this blog, we learn how to install using Command-Line with the below given commands: curl -sL | sudo -E bash - here setup_12.x is the version, and this command will add the node resource repo into your Ubuntu OS. Now, let’s install Node.js using apt command, by running the below command —  $ sudo apt install nodejs Once installed completely, you can verify that the Node.js and npm versions are installed by using the following command in a terminal/console window. — node -v or node — — version  npm -v 1. Need of NPM for Angular development Node.js serves as the Run-time environment for the application. Similarly, NPM(node package manager) is used as a dependency management tool for any JavaScript application. NPM will allow us to install the libraries required for any Angular application; for example, jQuery, angular-router, angular-http, bootstrap, and many more. You can explore a number of packages available in the npm store here. Note: Once you have installed Node.js it will automatically install NPM on your machine. You can check the version installed using the below command. npm -v 2. Angular CLI — What it is and the complete Installation guideIn the initial days of Angular, developers used to create whole architecture, webpack files, build process, etc for any project on their own from scratch, which is quite a time-consuming and lengthy process. To make it easier for the developer, the Angular team come up with an easy-to-use tool Angular CLI. As the name suggests CLI (command line interface), provides a user (developer) friendly interface where you can run commands to make your development life easier and faster. Angular CLI comes with a number of commands from creating a new project, to creating components, creating a routing configuration file, services, and many more.3. How to Install Angular CLI on Ubuntu To install the Angular CLI on your machine, open the terminal window and run the following command: npm install -g @angular/cli where -g denotes that CLI is being installed globally to your machine, which means you can create or run any command of CLI anywhere on your machine. Once you run the above command CLI will be installed on your machine, and you can verify the version installed using the following command: ng -vIn case you want to install some specific version of Angular CLI, you can run the below command —  npm install -g @angular/cli@x where `x` represents the Version number. You can change it to any valid version number. For more commands of Angular CLI, you can refer to this blog which contains a number of commands to use.4. Create Project using Angular CLI – Hello WORLD Moving on, let’s create our first ever Angular project using Angular CLI. Open your terminal window and type the command below on your machine. ng new hello-worldHere ng is our CLI prefix. new denotes the new project we are creating and hello-world is our project name. You can choose any name you want. After running this command, you will find the full architecture of the project in the directory where you run this command. The project folder will be like what is shown below -5. Angular Project architecture The first file to render on running this application will be index.html which is present in the src folder. src folder contains Source files for the root-level application project. assets folder contains all the static assets like images, fonts, etc. node_modules This folder is created while you run npm installed by package manager (npm) and it contains all the project dependencies or any third party modules required for the project. e2e folder contains all the source code related to Test Cases, and you can customize it as per your requirements. README.md file is being used as documentation for the app. Package.json configures npm dependencies that are available to the project in the workspace along with their versions specified. For more details about components/services and source code you can explore this link. Run the application You have completed the installation process of the Angular application via CLI, and now it’s time to run the application locally. As I said, Angular CLI comes with a complete tool-chain/commands for the development of front-end applications on your machine. Run the following command on the terminal (Navigate to the project directory if you are not in that directory) ng serve or ng serve --openThe --open (or just -o) option automatically opens your browser to  ng serve command will serve your application on localhost server which you can check by navigating to your browser with the below URL Once compiled successfully, your terminal window will look like below -You can customize the port as per your requirement by running the below command —  ng serve --host 0.0.0.0 --port 8080 Accessing Angular Web Interface ng serve command may take few seconds to run your application. Once completed, you should see a web page similar to the followingAnd it’s done! Now you can make changes in the default component’s template which is app.component.html  Also, moving forward you can generate a number of components/service/routing files using CLI commands as per your requirements and keep learning. 6. How to Uninstall Angular CLI on Ubuntu There are cases when you would need to uninstall Angular-CLI from your operating system. You can do so by running this below command on your terminal -  npm uninstall -g @angular/cli It's always recommended to run the command npm cache clean after uninstallation of Angular CLI from your system in order to avoid unwanted errors while installing it again. If you have any questions/doubts related to this blog, please let us know in the comment box below, and we would be more than happy to help you out.  If you have read this far, feel free to share this blog on social media or tweet about it.  Conclusion In this blog you have learned about what is Node/NPM and how you can install and use it. You have understood what is Angular CLI, and how you can use it after installing it on your Ubuntu Platform. Then we have created a new angular project from scratch using CLI command, and learnt how to run it. Now you have basic hands-on Angular application knowledge which you can use to start developing more applications. 
5626
Installation of Angular on Ubuntu

Angular is an Open source and TypeScript-based m... Read More

Useful links