javascript - How to make a Chrome Extension run code when on a certain url - Stack Overflow

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I'm trying to build a Chrome Extension that needs to send a POST request to a server when the user is on a certain url/path.

I have that part working, except the code I have right now only runs when I click on the icon of my Chrome Extension, how would I make the code run every time I'm on a certain url?

I also need data stored in chrome.storage to be accessible in the code that runs every time aswell

I'm trying to build a Chrome Extension that needs to send a POST request to a server when the user is on a certain url/path.

I have that part working, except the code I have right now only runs when I click on the icon of my Chrome Extension, how would I make the code run every time I'm on a certain url?

I also need data stored in chrome.storage to be accessible in the code that runs every time aswell

• javascript
• google-chrome

Share Follow asked Jan 5, 2017 at 1:56 Tyler ChongTyler Chong 72033 gold badges1212 silver badges2525 bronze badges 3

• Is your code in a content script? Content scripts run in the background of web pages. – Loaf Commented Jan 5, 2017 at 2:02
• chrome.storage may only be accessible via the background page. you will need to sendMessage to the background page, then sendMessage back. I remember having an issue which was resolved by including the third param (true) – neaumusic Commented Jan 5, 2017 at 2:09
• Possible duplicate of Chrome Extension run for a specific page – Tyler Chong Commented Jul 4, 2019 at 1:28

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1 Answer 1

Sorted by: Reset to default 7

The answer is to use a content script

Specify the matching url in your manifest.

A background page is always running, but the content script is only injected on specific pages (you can specify before/after load end)

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