The JavaScript for…in loop is used to iterate over properties of Objects. In JavaScript, Arrays are also Objects and each character in a string have an index. So, we can use them also to iterate over Arrays and Strings.
//Object example const obj = { a: 1, b: 2, c: 3, d: 4 } for (const key in obj) { console.log( obj[key] ) }
// Output:
1 2 3 4 //Array example const array = ['a', 'b', 'c', 'd']; for (const index in array) { console.log(array[index]) }
// Output:
a b c d //String example const string = 'Web Developer'; for (const index in string) { console.log(string[index]) }
//Output:
W e b D e v e l o p e r
Nice example for beginners.. I m a beginner so this is very helpful for me ... so plz give this type of beginners example..
This is a great introduction to variables in JavaScript! As a beginner to JavaScript, I found this guide very helpful in understanding the basics of variables and how they are used in JavaScript.
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The tutorial provides the more information JavaScript this provides the end to end information about JS and also they provides the more detailed concepts of loops, functions, objects, arrays this will use us to buld the effective web site. Thanks for the team good job.
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