How to check if an element exists in jQuery

In jQuery, you can use the .length property to check if an element exists. if the element exists, the length property will return the total number of the matched elements.

For example,

if($('#div1').length){
	alert("Div1 exists");
}else{
	alert("Div1 does not exists");
}

To check if an element which has an id of “div1″ exists.

jQuery length example

<html>
<head>
 
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
 
</head>
 
<body>
 
<h1>jQuery check if an element exists</h1>
 
<script type="text/javascript">
 
  $(document).ready(function(){
 
    $("#buttonDiv1").click(function () {
 
	if($('#div1').length){
		alert("Div1 exists");
	}else{
		alert("Div1 does not exists");
	}
 
    });
 
    $("#buttonDiv2").click(function () {
 
	if($('#div2').length){
		alert("Div2 exists");
	}else{
		alert("Div2 does not exists");
	}
 
    });
 
  });
</script>
</head><body>
 
<div id="div1">
	<b>This is DIV element which has an ide of "div1"</b>
</div>
 
<br/>
<br/>
<br/>
 
<input type='button' value='div1 exists?' id='buttonDiv1'>
<input type='button' value='div2 exists?' id='buttonDiv2'>
 
</body>
</html>
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Comments

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  • http://www.mananpatel.in Manan

    Really helpful post for me :)

    Thanks mkyong.

  • Manju

    Very nice.
    Thanks a lot

  • Pingback: VĂ©rifier l’existence d’un objet en JQuery | Balton()

  • http://granyatee.blogspot.com Ernesto Yat

    Thanks! It worked for me :)

    • http://evilwebdesign.bplaced.net Michael

      You could try my plugin that I created.

      Its called doesExist()

      I had to check if an element exists over and over again so I decided to make a small plugin for that.

      Usage:

      $(‘mySelector’).doesExist() // returns true or false

      Demo:
      http://evilwebdesign.bplaced.net/doesExist

      • sadas

        totally redundant!

  • Bangaru

    Horrible English Mr. MK Yong, alert messages are to b like “div1 exists” and “div2 does not exist”.