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I am having a strange problem in Google Chrome. I am including a js file via script src tag. I place alert('test') in the file and when I load the page in Chrome, It alerts twice. In every other browser it alerts once. Is there any known cause for this?

Here is the code that loads the JS: 

<script type="text/javascript" src="/js/main.js"></script>

It appears this happens in Safari as well. Does not occur in IE and firefox.

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    please post the code that loads the javascript Commented Jun 14, 2011 at 0:20
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    Add debugger; to the beginning of your javascript code and then step-through setting break points in the Dev Tool. Commented Jun 14, 2011 at 0:23
  • Ok I did that and it seems to go over the same code twice as I keep clicking "step into next function call". It read from line 0 to the last line then goes back to 0 after the last line. After the second time going down the script it stops. Commented Jun 14, 2011 at 0:26
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    can you post the code from main.js? Commented Jun 14, 2011 at 0:33
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    If you found the solution yourself, please post it as an answer and accept it in a few days. That way those that have the same problem in the future will know what to do. Commented Jun 24, 2014 at 14:43

3 Answers 3

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I had this recently and eventually found out it was a chrome extension, specifically the cache killer extension

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This was it for me too! Thank you! Looks like the page load-time is the same - it just reports the files are loading twice.
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Webkit browsers (Chrome, Safari) are loading pages redirected from .htaccess twice!

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I found the problem - I had a hidden iframe in the page with its source set to "#". This causes the page to load again in the iframe in Chrome/Safari.
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I've noticed this same problem in Chrome. I have some code that runs when the page loads and I have an alert inside that code. In every browser other than Chrome this code is run once, thus the alert displays once. In chrome the alert shows twice. I am not doing anything special, just running code when the onload event is triggered within <body onload="somefunction()">. I am not using links, iframes, or the Cache Killer extension. I tested it in Safari and the code is only being called once. This seems to be a Chrome specific problem.

I did some research and it appears this is a bug with Chrome. I found this link https://code.google.com/p/chromium/issues/detail?id=64810

Depending on your specific situation, this page may give you a work around for the problem.

The problem does not seem to be fixed as of yet.

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