jQuery - Get and Set CSS Classes

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jQuery - Get and Set CSS Classes
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With jQuery, it is easy to manipulate the CSS of elements.


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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");
});
»
You can also specify multiple classes within the addClass() method:

Example
$("button").click(function(){
    $("#div1").addClass("important blue");
});
»
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");
});
»
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");
});
»
jQuery css() Method
The jQuery css() method will be explained in the next chapter.

Test Yourself with Exercises!
Exercise 1 »  Exercise 2 »  Exercise 3 »  Exercise 4 »

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


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