A new method of converting arrays into JavaScript array.from

In the past, we used a variety of methods to convert things like array objects (such as arguments and NodeList ) into true values. For example, the following:

• Convert NodeList to an array

Basically, all of these things we can use Array.prototype.slice.call() in such a way will arguments and NodeList so turn into the desired form.

Now, we have a more straightforward way to directly convert the objects of these class arrays into real objects.

Will NodeListTransformed into Array

var divs = Array.from (Document.queryselectorall (' div ')); // array[232] (every DIV on the page)

Will argumentsTransformed into Array

function something () {  var args = array.from (arguments);   // array[' yes ', 1, {}] }something (' yes ', 1, {});

Will StringTransformed into Array

// very much like ' JavaScript '. Split (') // ["J", "a", "V", "a", "S", "C", "R", "I", "P", "T"]

These formulations are very simple and clear, no need to use slice indirect methods such as!

Original address: http://it.lindukj.cn/archives/1405

A new method of converting arrays into JavaScript array.from