How Can We Implement Array.prototype.map() Functionality for Objects in JavaScript?

Mapping Objects vs Arrays in JavaScript

In JavaScript, arrays provide a powerful map() method that allows for convenient modification of elements. However, the Object object lacks a native map counterpart.

Question:

Can we replicate the functionality of Array.prototype.map() for objects?

Answer:

While there is no native map method for objects, you can implement a similar behavior using Object.keys() and forEach():

<br>var myObject = { 'a': 1, 'b': 2, 'c': 3 };</p>
<p>Object.keys(myObject).forEach(function(key, index) {<br>  myObject[key] *= 2;<br>});</p>
<p>console.log(myObject); // Prints: { 'a': 2, 'b': 4, 'c': 6 }<br>

This code iterates over the object's keys, updates the corresponding values, and logs the resulting object. It serves as an effective alternative to a built-in object map method, providing similar transformative functionality.

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