Do getElementsByClassName (and similar functions like getElementsByTagName and querySelectorAll) work the same as getElementById or do they return an array of elements?  The reason I ask is because I am trying to change the style of all elements us...
I want to iterate over some DOM elements, I'm doing this:  document.getElementsByClassName( "myclass" ).forEach( function(element, index, array) {   //do stuff });   but I get an error: document.getElementsByClassName("myclass")...
I have looked through a number of similar questions but can not find a specific example of one that answers in vanilla JS how to add and remove a class to a different element from the one clicked on. I know it has something to do with setting up a lo...
I am using LitElement to create custom Web Components. I am fairly new at it and decided to try making image slideshow. I used W3Schools slideshow as reference while modifying it to work as LitElement.  The problem is, that when I am trying to use do...
I'm trying to set up a script that sets invisible everything with a certain class name.  This is an example of what I'm trying to call:  <script type="text/javascript"> function hideItems(){         document.getElementsByClassNa...
All of the following results were obtained using Google Chrome v36 & its console.  While debugging a Wordpress plugin, I discovered that running this little Javascript snippet  console.log(document.getElementsByClassName("switch-tmce")) c...
With Twitter Bootstrap, the .carousel-inner style is preset as:  .carousel-inner {   position: relative;   width: 100%;   overflow: hidden; }   such that overflow: hidden; causes a dropup button to be cut-off on the right-side:  http://imageshack.us/...
I tried to print the list of attributes values in a specific CSS class with the getElementsByClassName method like below :  <html>     <head>         <style>             .toto {                 width:200px;                 height:50...
Is it possible to get elements that have one of the specified classes? This is not the same as getting elements that have all of the specified classes.  For example, I want to capture all elements whose class list contains either one, two, or three....

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