第一个 谷歌浏览器扩展插件 操作网页

myscript.js
alert(‘测试‘);

{ 
  "name": "刷红包(演示)",
  "version": "1.0",
  "manifest_version":2,
  "description": "This is a auto click plug-in, you can use it in the web site",
  "icons":{"16":"icon.png","48":"icon.png","128":"icon.png"},
  "permissions": ["http://*/*"],
  "browser_action": {
        "default_icon": "icon.png"
  }, 
  "content_scripts":[
  {
      "matches":["https://www.baidu.com/"],
      "js":["myscript.js"]
  }
  ]
}