What is the use case for Javascript's (ES6) Array.of()?

Question

I came across the new Array.of() method that\'s been finalized in ES6, and I was wondering when one might use:

var a = Array.of(\'foo\', \'bar\');
         


        

Answer 1

Array.of([elem1], [elem2], ...)

returns elem1, elem2, etc. in an array.

equivalent to :

Array.of = function() {
    return [].slice.call( arguments );
};

example:

 Array.of("red", "green", "blue")

    [ 'red', 'green', 'blue' ]

When you need a constructor function (e.g. to pass it to another function) for arrays, this method is useful. That method lets you avoid a potential pitfall of the Array constructor function: If it has several arguments, it behaves like an array literal. If it has a single argument, it creates an empty array of the given length.

 new Array(3, 4, 5)
    [ 3, 4, 5 ]
    new Array(3)
    []

Here is a link to six new array methods added in ECMAScript for futher refernce.