querySelectorAll() the best JavaScript function in the world!

Error: Failed to execute 'querySelectorAll' on 'document'

The querySelectorAll() method is a method of the Document object in the web browser that allows you to find elements in the document that match a specified CSS selector. It returns a static (not live) NodeList of elements that match the specified group of CSS selectors.

Here's an example of how you might use querySelectorAll():

const elements = document.querySelectorAll('.my-class');

This would find all elements in the document with the class my-class.

If you are seeing an error that says "failed to execute 'querySelectorAll' on 'Document'", it means that the querySelectorAll() method is not being recognized by the browser. This could be because:

  • You are trying to use querySelectorAll() in a context where it is not supported (e.g., in a Node.js script that is not running in a browser).
  • You have a typo in the method name (e.g., querySelectorall instead of querySelectorAll).
  • The code is being executed before the DOM has finished loading, so the document object is not available yet.

To fix the error, you will need to make sure that you are using querySelectorAll() in a context where it is supported, check for typos, and make sure that your code is not being executed before the DOM is ready.