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Sometimes you may need to take an array and apply some procedure to its elements so that you get a new array with modified elements. This makes forEach() preferable when it comes to just, say, logging values, without changing them: Whereas, if you aim to change elements, map() is preferred. Let's go through the for-loop syntax and see how we may apply certain methods to each element. The values are of type How to set the value of an input field in JavaScript? typescript definitions gulp toastr repositories svgo svgr contributors snyk npm JavaScript map() function returns a new array, with each item being the result of the, You can see that we have used ES6 features like. newly reformatted objects. Array Map is a method that exists on the Array.prototype that was introduced in ECMAScript 5 (ES5) and is supported in all modern browsers. visited are not visited. Further - we've compared the map() method with the forEach() method, and explored how we can chain map() with filter(), reverse() and objects. Basic forin loop example The following code demonstrates a basic example using the forin statement, The