What's the difference between tag.class and tag .class?
46872
What does a space mean in a CSS selector? i.e. What is the difference between .classA.classB and .classA .classB?
119826
Detect element tag name by its class
102946
What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space)
140659
What does "for" attribute do in HTML  tag?
40261
style and script tags in HTML body... why not?
139404
JavaScript: Class.method vs. Class.prototype.method
31651
What are tag synonyms and merged tags? How do they work?
62828
Difference between .on('click') vs .click()
14147
Do we have getElementsByClassName in javascript?
5311
What's the difference between an id and a class?
67240
What is the difference between Document and document in JavaScript?
16604
What's the purpose (if any) of "javascript:" in event handler tags?
101425
How to Get Element By Class in JavaScript?
155744
Why use an attribute selector to match classes?
1933
How can I change an element's class with JavaScript?
146804
How to add a class to the image tag
140196
What's the difference between #import and @class, and when should I use one over the other?