How to add javascript in the html without sanitization?

I tried adding the script to the iframe in which the canvas renders by adding a <script> tag at the end of the body of the iframe. This works to some extent. The problem here is that when I need to update the js inside the script I will need to refresh the iframe (to remove any event listeners if present) and doing so gives me the following error:

Can you provide a reproducible demo of your issue, please?

Thanks for the reply @artf. I was doing a mistake while updating the iframe so now my problem is solved! Just another question, is there any built-in method to refresh the iframe?

Thanks for reporting this, @theSC0RP.

Great suggestion about How to add javascript in the html without sanitization?! While this specific feature isn't yet in the core API, there are several ways to achieve similar behavior.

Using the event system:

editor.on('component:update', (component) => {
  // your logic here
});

Alternative approaches:

• Listen to selector:add for CSS selector changes
• Use selector:custom for custom rules
• Tap into the change:* events for fine-grained tracking
• Build a plugin that extends the editor with this capability

Making it official: If this feature would benefit many users, consider opening a formal Feature Request on the GrapesJS repo with:

• A detailed use case
• Code example showing the desired behavior
• Why this matters for your workflow

The core team is receptive to well-motivated feature requests backed by real use cases.