Hide element by class in pure Javascript
36995
What do querySelectorAll and getElementsBy* methods return?
58591
Javascript/DOM: How to remove all events of a DOM object?
17523
How to remove an HTML element using Javascript?
130467
JavaScript (jQuery?): Toggle multiple classes with one click
61080
How can I add a class to a DOM element in JavaScript?
36511
Determine if an element has a CSS class with jQuery
54999
How to find anchor without a specifc class using jquery?
19467
"document.getElementByClass is not a function"
143791
Can I set a default css class for an html element
141198
jQuery hide all elements with the same id
150418
jquery does div contain children of a certain class
70597
pure javascript equivalent of jquery click()?
62089
how to hide javascript code
59589
How do I hide a parent div if the child div doesn't contain an  tag?
72001
CSS3 selector :first-of-type with class name?
78535
How to apply two CSS classes to a single element
1933
How can I change an element's class with JavaScript?