Basic Selectors in JQuery

1. By the ID attribute.
If the ID contains special character then you can escape them with backslashes. For example to find a text box with ID txtName you can write the following :

$("#txtName")

Then you can do any operation on the text box like getting the value or changing the css class.

2. By given element name. For example to get all the DIV elements following is the syntax

$("div")

This will find all the DIVs present in the page. You can do any operation after that.


3. By given class name. The following code finds all the elements which have class name 'RedButton'.

$(".RedButton")

Source