ES6 array methods

Arrays get a bunch of useful methods. Libraries such as lodash and underscore provided features missing in the language so far. With the new helper methods, array creation and manipulation is much more functional and easy to code.

Array.from

Converting array-like values to arrays has always been a bit of a challenge in JavaScript. People have employed several hacks and written libraries to just let you handle arrays effectively.

ES6 introduces a very helpful method to convert array-like objects and iterable values into arrays. Array-like values are objects that have a length property and indexed elements. Every function has an implicit arguments variable that contains a list of all arguments passed to the function. This variable is an array-like object. Before ES6, the only way we could convert the arguments object to an array was to iterate through it and copy the values over to a new array:

    function toArray(args) { 
        var result = []; 
        for (var...