黑马旅游网 解析url查询字符串

 function getUrlParam(name) {

     let reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");

     let r = window.location.search.substr(1).match(reg);

     return r != null ? r[2] : null;

 }

 function getQueryArgs(){

     let qs=location.search.length ? location.search.substring(1) : "";

     let args={};

     let items=qs.length ? qs.split("&") : [];

     for(let item of items){

         let pair=item.split("=");

         if(pair[0].length){

             args[decodeURIComponent(pair[0])]= decodeURIComponent(pair[1]);

         }

     }

     return args;

 }

 function getQueryStringArgs(){

     var qs=location.search.length ? location.search.substring(1) : "";

     var args={};

     var items=qs.length ? qs.split("&") : [];

     var item=null,

         name=null,

         value=null,

         len=items.length;

     for(var i=0;i<len;i++){

         item=items[i].split("=");

         if(item[0].length){

             name=decodeURIComponent(item[0]);

             value=decodeURIComponent(item[1]);

             args[name]=value;

         }

     }

     return args;

 }

 function getQuery() {

     let search = location.search;

     // alert(search);

     //没有查询参数

     let i = search.indexOf("?");

     if( i == -1){

         return {};

     };

     //去除问号

     search = search.substring(i + 1);

     //得到参数

     let result = {};

     let items = search.split("&");

     for(let item of items){

         let split = item.split("=");

         // alert(split[0]);

         // alert(split[1]);

         if(split[0]){

             result[decodeURIComponent(split[0])] = decodeURIComponent(split[1]);

         }

     }

     return result;

 }

解析url查询字符串