What is the difference between $('#___') and $('.___') in JQuery

Question

I often see these 2 selectors, what is the difference? Thanks

Answer 1

This is a ID selector (1)

$("#el")

This is a class selector (2)

$(".el")

So

<div id="el"></div> <-- (1) matches this -->
<div class="el"></div> <-- (2) matches this -->

References

• All Selectors
• ID Selector
• Class Selector

Answer 2

# matches an element with that ID. . matches elements with that class.

See more: http://api.jquery.com/category/selectors/

Answer 3

The # version is seeking by tag ID while the . version searches by CSS class.

Answer 4

$("#id") selects element by its id, while $(".class") selects elements by the specified class.