Why do you use Class for multiple elements but ID for one?
5311
What's the difference between an id and a class?
14534
HTML Element Array, name="something[]" or name="something"?
150418
jquery does div contain children of a certain class
13705
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
103736
Escape square brackets when assigning a class name to an element
21784
Why should I use 'li' instead of 'div'?
141836
How to use multiple jquery object variables as selectors?
153275
How can I change the class of an element with jQuery>
147911
Why we use inner classes?
83944
javascript variable corresponds to DOM element with the same ID
145819
Should I make HTML Anchors with 'name' or 'id'?
95541
Why JS function name conflicts with element ID?
155038
jQuery select random elements with same class
60435
Several elements with the same ID responding to one CSS ID selector
109016
:nth-child(even/odd) selector with class
9101
Same value for id(float)
50867
Using Javascript/jQuery to access HTML elements with improper id attribute