jQuery contains() Method
jQuery contains() Method
The jQuery contains() method checks whether a DOM element is a descendant of another DOM element.
Example
HTML Editor
<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<h1>jQuery contains() Method</h1>
<button>Click Me</button>
<script>
$(document).ready(function(){
$("button").click(function(){
alert($.contains(document.documentElement, document.body));
alert($.contains(document.body, document.documentElement));
});
});
</script>
</body>
</html>
Syntax
$.contains(container, contained);
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| container | Required | Specifies the DOM element that may contain the other element. |
| contained | Required | Specifies the DOM element that may be contained by (a descendant of) the other element. |
Return Values
| Value | Explanation |
|---|---|
| true | The DOM element is a descendant of another DOM element. |
| false | The DOM element is NOT a descendant of another DOM element. |
Reminder
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