To check if an HTML element has child nodes, you can use the
hasChildNodes() method. This method returns
true if the specified node has any child nodes, otherwise
Let us say you have the following HTML code snippet:
<html> <body> <div class="wrapper"> <button id="btn">Click Me</button> </div> </body> </html>
The following example shows that how you can use the
hasChildNodes() method to check if the
<button> tags have any child nodes:
const body = document.body; const btn = document.querySelector('button'); console.log(body.hasChildNodes()); // true console.log(btn.hasChildNodes()); // true
Whitespace and comments inside a node are also considered as text and comment nodes. So if you leave any whitespace, comments, or line feeds inside an element, that element still has child nodes.
hasChildNodes() method works in all modern browsers, and IE9 and up.
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