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