How can i check if an element has got a class in it?
36511
Determine if an element has a CSS class with jQuery
131554
jQuery determining if element exists on page
27983
How can I tell if a DOM element is visible in the current viewport?
98418
Can I write a CSS selector selecting elements NOT having a certain class or attribute?
101850
How to add class to a jQuery element if a condition is true and remove the same class if the condition is false?
148273
Check if event exists on element
139213
Reliable way to get the "ancestor" of an object with a specific classname, using jQuery
22882
How do I find out which DOM element has the focus?
10278
Check if an image is loaded (no errors) with jQuery
80984
How do I check if an HTML element is empty using jQuery?
133139
How do I add a css class to an Div element in JQuery?
88996
Is there a CSS selector by class prefix?
103062
How do I check whether a checkbox is checked in jQuery?
61080
How can I add a class to a DOM element in JavaScript?
61044
jQuery - How to match an element has attribute a or attribute b
14147
Do we have getElementsByClassName in javascript?
110853
How do I select multiple elements and a class in JQuery