When I test the code snippet below in the Chrome console, it works perfectly fine. However, the code fails to work when I incorporate it into my JavaScript extension in Chrome.
var region = document.getElementById("physicalDeliveryOfficeName");
region.removeAttribute("onchange");
Can anyone offer insights into what might be going wrong? I've attempted adding this line within my function as well as at the beginning of my script, but to no avail.
The reason for this behavior is the controlled environment within which a Chrome extension operates, as explained in the documentation on isolation.
In order to make changes to the page context handlers, it is necessary to inject the code directly into the page.
For more information on how to insert code into the page context using a content script, please refer to this resource.
When you're working in the console, it's because the DOM has already loaded. Make sure to place your code within an event handler to ensure it runs at the right time.
document.addEventListener("DOMContentLoaded", function(event) {
var region = document.getElementById("physicalDeliveryOfficeName");
region.removeAttribute("onchange");
});
Check out this link for more information on DOMContentLoaded event
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