Class Selector (".class")

Categories: Selectors > Basic Chinese Translation: Class Selector (".class")

class selector

Description: Selects all elements with the given class.

  • version added: 1.0jQuery( ".class" )

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

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

Examples:

Finds the element with the class "myClass".

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>class demo</title>
  <style>
  div, span {
    width: 120px;
    height: 40px;
    float: left;
    padding: 10px;
    margin: 10px;
    background-color: #EEEEEE;
  }
  </style>
  <script src="https://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:

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

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>class demo</title>
  <style>
  div, span {
    width: 120px;
    height: 40px;
    float: left;
    padding: 10px;
    margin: 10px;
    background-color: #EEEEEE;
  }
  </style>
  <script src="https://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: