<pre class="shiki github-dark shaku"><code>Array.prototype.myMap = function(fn, thisArg) { // your code here let result = []; this.forEach((item, index) =&gt; { result[index] = fn.call(thisArg, item, index, this) }); return result;}</code></pre>

Simple

Apple

Amazon

Please implement your own Array.prototype.map(). [1,2,3].myMap(num => num * 2) > please avoid using Array.prototype.map() directly in your code.…