Why is chrome.browserAction.onClicked undefined?
问题 I'm writing a Chrome extension that will redirect me to a URL when clicking on the browser action icon. I'm trying to use: chrome.browserAction.onClicked.addListener but I get Uncaught TypeError: Cannot read property 'onClicked' of undefined This is my manifest file: { "name": "first extension", "version": "2.2.12", "description": "redirct to a link icon", "browser_action": { "default_icon": "icontest.png", "default_title": "Do action" }, "permissions": ["tabs", "http://*/*"], "content