Convert NodeList to array

IE doesn't support NodeList in the standard way. This is why you should roll your own namespace and NOT extend browser core objects.

You can do alert( typeof window.NodeList ) and see if it's undefined or not.

First, don't use document.all -- it's non-standard and deprecated. Use document.getElementsByTagName to get the DIV elements in your case.

Second, don't extend DOM objects such as NodeList -- built-in objects are a very strange breed and are not required to behave like any other objects that you generally work with. See this article for an in-depth explanation of this: What's wrong with extending the DOM.

If you're looking for a modern answer using ES6:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from

var nodes = document.querySelectorAll('div');
nodes = Array.from(nodes);

Old question, but here is a tried & true method:

var nodes=document.querySelectorAll("div"); //  returns a node list
nodes=Array.prototype.slice.call(nodes);    //  copies to an array

Explanation

• document.querySelectorAll uses a CSS-style selector to find elements and returns a node list. It works as of IE 8.
• The slice method copies a portion of an array-like collection (in this case all of it) into a new array.
• call allows you to borrow a method from one object to use on another

To find the node list you could also have used `document.getElementsByTagName(), but this one is more flexible.