Examine source code of jc_form

{
  "manifest_version": 2,
  "name": "jcmt",
  "version": "1.2",
  "description": "The plug-in will be used at http://www.gzairports.com:11111/order/index.htmlto assist in the quick filling of forms.",
  "icons": {
    "48": "icons/jc-icon.jpg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.gzairports.com/*"
      ],
      "js": [
        "jquery-1.12.4.min.js",
        "sessionalert.js"
      ]
    }
  ]
}