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jQuery - Get and Set CSS Classes:

With jQuery, it is easy to manipulate the style of elements.

jQuery Manipulating CSS

jQuery has several methods for CSS manipulation. We will look at the following methods:

  • addClass() - Adds one or more classes to the selected elements
  • removeClass() - Removes one or more classes from the selected elements
  • toggleClass() - Toggles between adding/removing classes from the selected elements
  • css() - Sets or returns the style attribute

Example Stylesheet

The following stylesheet will be used for all the examples on this page:

.important {
  font-weight: bold;
  font-size: xx-large;
}

.blue {
  color: blue;
}

jQuery addClass() Method

The following example shows how to add class attributes to different elements. Of course you can select multiple elements, when adding classes:

Example

$("button").click(function(){
  $("h1, h2, p").addClass("blue");
  $("div").addClass("important");
});
Try it Yourself »

You can also specify multiple classes within the addClass() method:

Example

$("button").click(function(){
  $("#div1").addClass("important blue");
});
Try it Yourself »

jQuery removeClass() Method

The following example shows how to remove a specific class attribute from different elements:

Example

$("button").click(function(){
  $("h1, h2, p").removeClass("blue");
});
Try it Yourself »

jQuery toggleClass() Method

The following example will show how to use the jQuery toggleClass() method. This method toggles between adding/removing classes from the selected elements:

Example

$("button").click(function(){
  $("h1, h2, p").toggleClass("blue");
});
Try it Yourself »

jQuery css() Method

The jQuery css() method will be explained in the next chapter.

jQuery Exercises

Test Yourself With Exercises

Exercise:

Use a jQuery method to add the "important" class to a <p> element.

$("p").("");

Start the Exercise

jQuery CSS Reference

For a complete overview of all jQuery CSS methods, please go to our jQuery HTML/CSS Reference.