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Editorial Team
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Asked: 2026-06-04T23:40:10+00:00

I have a small code in my page with <script type=text/javascript> function doPost() {

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I have a small code in my page with

 <script type="text/javascript">
 function doPost() {
 document.forms["form"].submit();
}  
  function Func1Delay()
{
setTimeout("doPost()", 0);
}

….

   <body onload="Func1Delay()">

I have this error in the console saying

Uncaught TypeError: Cannot call method ‘create’ of undefined

and on the right, it’s due to the chrome extension MeasureIt. When I disable it, my script works. Is there a workaround for this problem?

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1 Answer

  1. Editorial Team

    The short answer is YES.
    But the complete answer is NO, it’s not Chrome, but some extension who interfere with your code.
    For example:

    1) A content script can add a listener and use stopPropagation. In this case your code won’t receive that event. I can image a more specific scenario where the content script fails and therefore prevents other listeners to execute.

    2) A content script can mess with your page’s elements. It can remove some, and add its owm. What would happen if the extension add a SCRIPT element with a var or function named exactly the same that one of yours?

    We cannot be sure about how “well” the extension’s code is written.

    By the way, there is a lot of Chrome’s extensions that interfere with pages. Some months ago Skype extension for Chrome was found guilty of interfere and destabilize web pages and video playback in that browser.

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