jQuery | #id Selector

Last Updated : 27 Feb, 2019

The #id selector specifies an id for an element to be selected. It should not begin with a number and the id attribute must be unique within a document which means it can be used only one time.

Syntax:

$("#id")

Parameter:

id: An element’s specific id.

Example-1:

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src= 
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
  </script> 
     
  <script> 
    $(document).ready(function() { 
    $("#Geeks").css("background-color","red"); 
      }); 
  </script> 
</head> 
  
<body> 
  
    <h1>GEEKS FOR GEEKS</h1> 
  
    <p id="Geeks">jQuery|#id selector 
  </p> 
  
</body> 
  
</html> 

Output:

Example-2:

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="utf-8"> 
    <title>ID</title> 
    <style> 
        div { 
            width: 100px; 
            height: 100px; 
            float: left; 
            padding: 10px; 
            margin: 10px; 
            background-color: pink; 
        } 
    </style> 
    <script src= 
"https://code.jquery.com/jquery-1.10.2.js"> 
  </script> 
</head> 
  
<body> 
  
    <div id="DIV1"> 
        <p>id="DIV1"</p> 
    </div> 
    <div id="DIV2">id="DIV2"</div> 
  
    <script> 
        $("#DIV2").css("border", 
                       "2px solid yellow"); 
    </script> 
  
</body> 
  
</html> 

Output:

Supported Browsers:

Google Chrome
Mozilla Firefox
Edge
Safari
Opera

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