CODEWITHSUNDEEP
javascriptfirefox-addonfirefox-addon-webextensions
Susan D. Taylor
Susan D. Taylor

Reputation: 679

how to get web extension icon to call javascript

I try to create a simple firefox web extension. As a first try i thought I want to just get some alert box when the extension button is clicked

I created this manifest.json

{
  "manifest_version": 2,
  "name": "FirstExt",
  "version": "1.0",

  "description": "first script",

  "background": {
    "scripts": ["background.js"]
  },

  "browser_action": {
    "default_icon": "icons/icon-38.png",
    "default_title": "My first extension"
  } 
}

and in background.js:

browser.browserAction.onClicked.addListener(function(){ alert("hello"); });

I tried changing it to console.log but get no output. What am I doing wrong here?

Upvotes: 1

Views: 100

Answers (1)

Xan
Xan

Reputation: 77523

alert is disabled from background pages in WebExtensions.

Firefox does not support using alert(), confirm(), or prompt() from background pages.

Your console output probably works, but you need to be looking in the correct (background) console - not the currently displayed tab's console.

See the MDN documentation on debugging background pages ― the console is accessible through about:debugging page.

Upvotes: 1

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