manifest.json

{
  "manifest_version": 2,

  "name": "juzselect",
  "description": "This extension is used to fetch the meaning of the word which is selected in the webpage",
  "version": "2.0",
  "icons": {
    "128": "image/icon128.png",
    "48": "image/icon48.png",
    "16": "image/icon16.png"
  },

  "browser_action": {
    "default_icon": "image/icon16.png",
    "default_popup": "popup.html"
  },

  "background": {
    "scripts": ["js/dictionary.js", "js/eventPage.js"]
  },

  "content_scripts":[
    {
      "matches": [ "<all_urls>", "http://*/*", "https://*/*"],
      "match_about_blank": true,
      "all_frames": true,
      "run_at": "document_start",
      "js": ["js/lib/jquery.js", "js/content.js", "js/processor.js"],
      "css": ["css/content.css"]
    }
  ],

  "permissions": [
    "<all_urls>",
    "http://*/",
    "https://*/",
    "tabs",
    "storage",
    "notifications"
  ],

  "options_page": "options.html"
}