window.location对象

简写为：location

会返回一个字典对象，如下：

Location { href="http://www.w3school.com..../js_window_location.asp",  origin="http://www.w3school.com.cn",  protocol="http:",  更多...}

 常见的属性：

location.href "https://www.baidu.com/baidu?tn=monline_3_dg&ie=utf-8&wd=javascript"
location.origin "https://www.baidu.com"
location.pathname "/baidu"
location.search "?tn=monline_3_dg&ie=utf-8&wd=javascript"
location.host和location.hostname "www.baidu.com"
location.port ""
location.protocol "https:"

常见的方法：

location.reload() 重新加载当前页面
location.assign("url") 在当前页打开新页面，可以用后退返回
location.replace('url') 在当前页打开新页面，没有后退可用