![]() ![]() One of the main differences between forEach() and map() methods is their ability to chain other methods. Repeatedly calling one method after another on an object. Example Code const exampleArray = Ĭonsole.log(exampleArray.forEach(x => x * x * x)) Ĭonsole.log(exampleArray.map(x => x * x * x)) Ĭhaining methods is the ability that one can attach another method after performing one method in one continuous line of code. The method executes testFunc() for every element of the array and if true is returned by the testFunc(). In JavaScript, "this" keyword refers to the object it belongs to. If it is empty, the value "undefined" will be passed as its "this" value. It is an optional argument that is passed to the function and used as its "this" value.
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