jQuery addClass() Method
jQuery HTML/CSS MethodsExample
Add a class name to the first <p> element:
$("button").click(function(){
$("p:first").addClass("intro");
});
Try it Yourself »
Definition and Usage
The addClass() method adds one or more class names to the selected elements.
This method does not remove existing class attributes, it only adds one or more class names to the class attribute.
Tip: To add more than one class, separate the class names with spaces.
Syntax
$(selector).addClass(classname,function(index,oldclass))
| Parameter | Description |
|---|---|
| classname | Required. Specifies one or more class names to be added |
| function(index,currentclass) | Optional. Specifies a function that returns one or more class names to be added
|
Try it Yourself - Examples
Add two classes to an element
How to add two class names to a specified element.
Add classes using a function
How to add classes to selected elements using a function.
Change the class name of an element
How to use addClass() and removeClass() to remove one class name, and add a new class name.
