URL参数解析问题

 

 

 

请编写一个JavaScript函数 parseQueryString，它的用途是把URL参数解析为一个对象，如：var url = ”http://www.taobao.com/index.php?key0=0&key1=1& key2=2…..”
var obj = parseQueryString(url);
alert(obj.key0)  // 输出0

 

传入参数:

 

  
    

   
     
   
      
   
     <
   
     script type
   
     =
   
     "
   
     text/javascript
   
     "
   
     >
   
     
 
   
     var
   
      getQuery 
   
     =
   
      
   
     function
   
     (query) {
 
   
     var
   
      oQuery 
   
     =
   
      {};
 
   
     var
   
      iBegin 
   
     =
   
      query.indexOf(
   
     "
   
     ?
   
     "
   
     );
 
   
     var
   
      sQuery 
   
     =
   
      query.substring(iBegin 
   
     +
   
      
   
     1
   
     );
 
   
     var
   
      aQuery 
   
     =
   
      sQuery.split(
   
     "
   
     &
   
     "
   
     ); ;
 
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      aQuery.length; i
   
     ++
   
     ) {
 
   
     var
   
      k 
   
     =
   
      aQuery[i].indexOf(
   
     "
   
     =
   
     "
   
     );
 
   
     if
   
      (k 
   
     ==
   
      
   
     -
   
     1
   
     ) 
   
     continue
   
     ;
 
   
     var
   
      key 
   
     =
   
      aQuery[i].substring(
   
     0
   
     , k);
 
   
     var
   
      value 
   
     =
   
      aQuery[i].substring(k 
   
     +
   
      
   
     1
   
     );
 oQuery[key] 
   
     =
   
      value;
 }
 
   
     return
   
      oQuery;
 }
 
   
     var
   
      test 
   
     =
   
      getQuery(
   
     "
   
     http://www.taobao.com/index.php?key0=0&key1=1&key2=2
   
     "
   
     );
 
 
   
     <
   
     /
   
     script>
  
    

 

 直接读取网址:

  
    

   
     
   
      1 
   
      
   
     <
   
     script type
   
     =
   
     "
   
     text/javascript
   
     "
   
     >
   
     

   
      2 
   
      
   
     var
   
      parseQueryString 
   
     =
   
      
   
     function
   
     () {

   
      3 
   
      
   
     var
   
      args 
   
     =
   
      
   
     new
   
      Object();

   
      4 
   
      
   
     var
   
      query 
   
     =
   
      window.location.search.substring(
   
     1
   
     );

   
      5 
   
      
   
     var
   
      pairs 
   
     =
   
      query.split(
   
     "
   
     &
   
     "
   
     );

   
      6 
   
      
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      pairs.length; i
   
     ++
   
     ) {

   
      7 
   
      
   
     var
   
      pos 
   
     =
   
      pairs[i].indexOf(
   
     "
   
     =
   
     "
   
     );

   
      8 
   
      
   
     if
   
      (pos 
   
     ==
   
      
   
     -
   
     1
   
     ) 
   
     continue
   
     ;

   
      9 
   
      
   
     var
   
      argname 
   
     =
   
      pairs[i].substring(
   
     0
   
     , pos);

   
     10 
   
      
   
     var
   
      value 
   
     =
   
      pairs[i].substring(pos 
   
     +
   
      
   
     1
   
     );

   
     11 
   
     

   
     12 
   
      args[argname] 
   
     =
   
      value;

   
     13 
   
      }

   
     14 
   
      
   
     return
   
      args;

   
     15 
   
      }

   
     16 
   
     

   
     17 
   
      
   
     var
   
      args 
   
     =
   
      parseQueryString();

   
     18 
   
      alert(args.key1);

   
     19 
   
      
   
     <
   
     /
   
     script>