Chrome Extension's Icon on click

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I\'m having a difficult time understanding how to have some JS to run when the chrome extension icon has been clicked. I\'d like to for example, read some properties from the do

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天命终不由人

2021-02-05 17:55
There are two approaches you can use:

Approach 1: Use a background script.

in manifest.json:
```
"browser_action": {
    "default_icon": "icon.png"
},
"permissions": [
    "activeTab",
    "clipboardWrite"
],
"background": {
    "persistent": false,
    "scripts": ["background.js"]
}
```
(You can also use "page": "background.html" instead of "scripts".)

in background.js:
```
chrome.browserAction.onClicked.addListener(function(tab) {
    alert('working?');
});
```
Approach 2: Use a popup. manifest.json:
```
"browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
},
"permissions": [
    "activeTab",
    "clipboardWrite"
]
```
in popup.html:
```
<html>
 <head>
  <script src="popup.js"></script>
 </head>
</html>
```
in popup.js:
```
alert('working?');
```
Your problem was that you were mixing the two. If you use a browser_action.default_popup, then chrome.browserAction.onClicked is never triggered. (And you wouldn’t want a background page named popup.html, since that would cause all sorts of confusion.)
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Chrome Extension's Icon on click

Approach 1: Use a background script.

Approach 2: Use a popup. manifest.json: