1. window
   1. window.open
2. location对象
   1. location.href 获取浏览器地址
   2. location.href = ‘http://www.baidu.com‘ // 跳转到百度
   3. location.href = ‘http://www.baidu.com?username=huruqing‘
3. history对象
4. setTimeout 延迟
5. setInterval 定时器
6. navigation: user-agent