JavaScript 解析html頁面中的URL字串

/// 以索引值對的方式讀取URL字串

/// 例如 http://192.168.1.211/JcySoft6.0_changzhi/Vacation.htm?id=1&action=add
     function getQueryString(key)

     {

         var value = "";

         ///擷取當前頁面的URL

         var sURL = window.document.URL;        

         ///URL中是否包含查詢字串

         if (sURL.indexOf("?") > 0)

         {

              //分解URL,第二的元素為完整的查詢字串

              //即arrayParams[1]的值為【id=1&action=2】

              var arrayParams = sURL.split("?");

             

              //分解查詢字串

              //arrayURLParams[0]的值為【id=1 】

              //arrayURLParams[2]的值為【action=add】

              var arrayURLParams = arrayParams[1].split("&");

                      

              //遍曆分解後的索引值對

              for (var i = 0; i < arrayURLParams.length; i++)

              {

                   //分解一個索引值對

                   var sParam = arrayURLParams[i].split("=");

                  

                   if ((sParam[0] == key) && (sParam[1] != ""))

                   {

                       //找到匹配的的鍵,且值不為空白

                       value = sParam[1];

                       break;

                   }

              }       

         }

        

         return value;

     }