JavaScript node.contains() Method
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JavaScript node.contains() Method
The node.contains() method indicates whether a node is a descendant of a specified node.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p><span>span</span> inside paragraph</p>
<button onclick="myFunction()">Click Me</button>
<script>
var p = document.getElementsByTagName("p")[0];
var span = document.getElementsByTagName("span")[0];
function myFunction(){
alert(p.contains(span));
}
</script>
</body>
</html>
Syntax
node.contains(otherNode)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| otherNode | Required | A node to check whether it is a descendant of a given node. |
Return Values
| Value | Explanation |
|---|---|
| true | If the otherNode is a descendant of a given node. |
| false | If the otherNode is not a descendant of a given node. |
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