I was looking at some snippets of code, and I found multiple elements calling a function over a node list with a forEach applied to an empty array.  For example I have something like:  [].forEach.call( document.querySelectorAll('a'), functi...

After providing an incorrect answer concerning the .item() property of Node.childNodes for a question, I inspected __proto__ of the returned childNodes of a form element and found a forEach method.  The forEach method of Node.childNodes is not docu...

In ES6, an iterable is an object that allows for... of, and has a Symbol.iterator key.   Arrays are iterables, as are Sets and Maps. The question is: are HTMLCollection and NodeList iterables? Are they supposed to be?  MDN documentation seems to sugg...

Traditionally, a suggested way of removing a node's children in Javascript is to do something like this:  while(node.firstChild) {     node.removeChild(node.firstChild); }   Recently, I attempted to remove all of a node's children using the b...

I'm trying to get a list in JavaScript (not using jQuery) of all the elements on the page with a specific class name. I therefore employ the getElementsByClassName() function as follows:  var expand_buttons = document.getElementsByClassName('...

I am trying to display data from an external .jsp file, which is set up something like this:  <tag>   <innertag1 id="1">   <innertag1 id="2"> </tag> <tag>   <innertag2 id="3">   <innertag...

Why don't getElementsByName, getElementsByTagName, and getElementsByClassName return an HTMLCollection (W3C, MDN) instead of a NodeList (W3C, MDN)?  All three return a live NodeList of only elements:  document.getElementsByName('nameAttrVal&#...

I am using a forEach to loop through a nodeList. My code is as follows  var array = document.querySelectorAll('items');  array.forEach(function (item) {     console.log(item); });    And this code throws an error as      Uncaught TypeError: a...

I have what I think should be a straightforward question; let me quickly explain:  In my JavaScript, food.xml is read in with:  getMenuXml.open("GET","food.xml",false); getMenuXml.send(); xmlDoc=getMenuXml.responseXML; xmlFoodList = x...

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