Why is Chrome Extension JavaScript does not get changed?

Question

I'm trying to build a chrome extension, based on this one

so I have two files: manifest.json and sample.js

I make some changes on sample.js, they sometimes apply when I reload the page, sometimes don't. I try clearing the cache. Again, it sometimes work. Now I'm completely stuck.

Let's say I try to alert something when clicked on a context menu,

function onClickHandler(info, tab) {
 alert("1");
}

then I change it to

function onClickHandler(info, tab) {
 alert("2");
}

but it keeps alerting 1.

I try clearing the cache, closing and re opening Chrome, even uninstalling and re-installing the extension. Nothing works.

I hope I made myself clear. How do I make sure that the extension is up to date with my sample.js file?

Do I need to disable javascript cache somewhere ?

Thanks for any help..

possible duplicate of Faster way to modify chrome extension than Remove -> Load unpacked — Evan Carroll
– Evan Carroll, Commented Feb 23, 2014 at 23:41

Timothée Boucher · Accepted Answer · 2013-08-16 05:19:50Z

3

You should go to chrome://extensions/ and click "Reload" for your extension. (or press Ctrl/Cmd+R but that will reload all your development extensions which might take longer if you have a bunch)

It's the best way to make sure all your extension files are reloaded.

Another way is to use something like Extensions Reloader. It's an extension that adds a button to your toolbar which will reload your extensions for you. (except for changes to manifest.json, which shouldn't be a problem since that's not the file you'll change the most)

answered Aug 16, 2013 at 5:19

Timothée Boucher

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4 Comments

jeff Over a year ago

Manually reloading is ok, I only have one. I just need a 100% sure way to have the latest code running. I will give that extension a try, if reload does not work. Thanks !

Timothée Boucher Over a year ago

In that case, going to chrome://extensions/ is the way to go.

jeff Over a year ago

Yep, it worked. I will accept your answer in 2 minutes. Thanks again !

Protector one Over a year ago

Note that the Reload button (circle arrow icon) is only visible, when there are no errors. (The Error Button appears next to the Remove Button.) Also, you need to press "clear errors" after reloading; they don't clear automatically.

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