//获取当前窗口的Url     var url = window.location.href;     //结果：http://localhost:8080/homePage/Index?id=0&type=1
    //获取当前窗口的主机名     var host = window.location.host;     //结果：localhost:8080
    //获取当前窗口的端口     var port = window.location.port;     //结果：8080
    //获取当前窗口的路径     var pathname = window.location.pathname;     //结果：/homePage/Index
    //获取当前文档的Url     var URL = document.URL;     //结果：http://localhost:8080/homePage/Index?id=1&type=1
    //获取参数     var search = window.location.search;     //结果：?id=1&type=1