querystring的处理类

  
    

   
      
   
     /*
   
     
 * 对于querystring（形如?userid=222&username=23432sdf）的处理
 
   
     */
   
     
 
   
     function
   
      PageQuery(q) {
 
   
     if
   
      (q.length 
   
     >
   
      
   
     1
   
     )
 
   
     this
   
     .q 
   
     =
   
      q.substring(
   
     1
   
     , q.length);
 
   
     else
   
     
 
   
     this
   
     .q 
   
     =
   
      
   
     null
   
     ;
 
   
     //
   
     定义键值对
   
     

   
      
   
     this
   
     .keyValuePairs 
   
     =
   
      
   
     new
   
      Array();
 
   
     if
   
      (
   
     this
   
     .q) {
 
   
     var
   
      infos 
   
     =
   
      
   
     this
   
     .q.split(
   
     "
   
     &
   
     "
   
     );
 
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      infos.length; i
   
     ++
   
     ) {
 
   
     //
   
     将参数添加到数组中
   
     

   
      
   
     this
   
     .keyValuePairs.push(infos[i]);
 }
 }
 
   
     this
   
     .getKeyValuePairs 
   
     =
   
      
   
     function
   
      () { 
   
     return
   
      
   
     this
   
     .keyValuePairs };

 
   
     //
   
     获得当前参数的个数
   
     

   
      
   
     this
   
     .getLength 
   
     =
   
      
   
     function
   
      () { 
   
     return
   
      
   
     this
   
     .keyValuePairs.length };

 
   
     //
   
     根据输入的key，找出相应的value
   
     

   
      
   
     this
   
     .getValue 
   
     =
   
      
   
     function
   
      (s) {
 
   
     var
   
      length 
   
     =
   
      
   
     this
   
     .getLength();
 
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      length; i
   
     ++
   
     ) {
 
   
     if
   
      (
   
     this
   
     .keyValuePairs[i].split(
   
     "
   
     =
   
     "
   
     )[
   
     0
   
     ] 
   
     ==
   
      s)
 
   
     return
   
      
   
     this
   
     .keyValuePairs[i].split(
   
     "
   
     =
   
     "
   
     )[
   
     1
   
     ];
 }
 };

 
   
     //
   
     获得所有参数
   
     

   
      
   
     this
   
     .getParameters 
   
     =
   
      
   
     function
   
      () {
 
   
     var
   
      parameters 
   
     =
   
      
   
     new
   
      Array();
 
   
     var
   
      length 
   
     =
   
      
   
     this
   
     .getLength();
 
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      length; i
   
     ++
   
     ) {
 parameters.push(
   
     this
   
     .keyValuePairs[i].split(
   
     "
   
     =
   
     "
   
     )[
   
     0
   
     ]);
 }
 
   
     return
   
      parameters;
 }
 }

 
   
     function
   
      analysisUrl() {
 
   
     //
   
     可以用this.location.search取得？后面的参数
   
     
//
   
      alert(this.location.search);
   
     

   
      
   
     var
   
      page 
   
     =
   
      
   
     new
   
      PageQuery(
   
     "
   
     ?userid=234&username=sdfsd
   
     "
   
     );
 
   
     //
   
      alert(page.getLength());
   
     

   
      alert(page.getValue(
   
     "
   
     username
   
     "
   
     ));
 
   
     var
   
      params 
   
     =
   
      page.getParameters();
 
   
     for
   
      (
   
     var
   
      i 
   
     =
   
      
   
     0
   
     ; i 
   
     <
   
      params.length; i
   
     ++
   
     ) {
 alert(params[i]);
 }
 }
 
   
     <
   
     /
   
     script>
通过以上的例子验证，这个类别是可以用的。