jQuery contains() Method

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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

ValueTypeExplanation
containerRequiredSpecifies the DOM element that may contain the other element.
containedRequiredSpecifies the DOM element that may be contained by (a descendant of) the other element.

Return Values

ValueExplanation
trueThe DOM element is a descendant of another DOM element.
falseThe DOM element is NOT a descendant of another DOM element.

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