jQuery is() Method

jQuery Web Development Front End Technology

The is() method in jQuery is used to check whether one of the selected elements matches the value in parameter selectorEle.

Syntax

The syntax is as follows −

$(selector).is(selectorElement,func(index,element))

Above, selectorEle is a selector expression, element or jQuery object to match with the current set of the element. The func parameter is used to specify a function to run for the group of selected elements.

Example

Let us now see an example to implement the jQuery is() method −

Live Demo

<!DOCTYPE html>
<html>
<head>
<style>
div {
   width:600px;
}
.demo * {
   display: block;
   border: 2px solid yellow;
   color: blue;
   padding: 10px;
   margin: 10px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
   $(document).ready(function(){
      $("button").click(function(){
         if ($("span").parent().is("li")) {
            alert("Yes, li is a parent of span");
         }
      });
   });
</script>
</head>
<body class="demo">great-great-grandparent
<div>great-grandparent
<ul>grandparent
<li>parent
<span>span</span>
</li>
</ul>
</div>
<button>Check</button>
</body>
</html>