add css class jquery code example

Example 1: jquery add class

if ($( "#foo" ).hasClass('className')) {
	$( "#foo" ).removeClass( 'className');
} else {
  $( "#foo" ).addClass( 'className');
}

Example 2: addclass jquery

$( "p" ).addClass( "myClass yourClass" );

Example 3: add class jquery

$("#my_id").attr("class", "my_new_class_name");

Example 4: jquery add css class

$("div").addClass("important");

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

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Css Example

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