Class Selector (".class")

class ( class ) version added: 1.0

  • class
    Type: String
    A class to search for. An element can have multiple classes; only one of them must match.

Description: Selects all elements with the given class.

For class selectors, jQuery uses JavaScript's native getElementsByClassName() function if the browser supports it.

Examples:

Example: Finds the element with the class "myClass". 

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>css demo</title>

  <style>

  div, span {
    width: 120px;
    height: 40px;
    float: left;
    padding: 10px;
    margin: 10px;
    background-color: #EEEEEE;
  }

  </style>

  <script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
  

<div class="notMe">div class="notMe"</div>
<div class="myClass">div class="myClass"</div>
<span class="myClass">span class="myClass"</span>

<script>

$( ".myClass" ).css( "border", "3px solid red" );

</script>

  
</body>
</html>

Demo:

Example: Finds the element with both "myclass" and "otherclass" classes. 

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>css demo</title>

  <style>

  div, span {
    width: 120px;
    height: 40px;
    float: left;
    padding: 10px;
    margin: 10px;
    background-color: #EEEEEE;
  }

  </style>

  <script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
  

<div class="myclass">div class="notMe"</div>
<div class="myclass otherclass">div class="myClass"</div>
<span class="myclass otherclass">span class="myClass"</span>

<script>

$( ".myclass.otherclass" ).css( "border", "13px solid red" );

</script>

  
</body>
</html>

Demo: