js獲取URL中的參數值


/*
獲取URL中最后一項參數的值
*/


var str=window.location.href;
//alert(str);
var es=/SouceID=/;
es.exec(str);
var right=RegExp.rightContext;
//alert(right);
  
  //列子
    <script
language="javascript">
    var str=window.location.href;
    var
es=/SouceID=/;
    es.exec(str);
    var
right=RegExp.rightContext;
    //alert(right);
    switch(right){
    case
'Din':
    case 'Exh':
    case 'Banks':
    case 'Shop':
    case
'Treat':
    case
'Trip':
         ChgTab('tab3','tabcontent3');
         break;
    case
'Air':
    case 'Railway':
    case 'Road':
    case
'Subway':
ChgTab('tab2','tabcontent2');
          break;
   default:
         ChgTab('tab1','tabcontent1');
}
</script>



//以下是函數的寫法
function GetParam(){
   
var url = document.location.href;
   
var name=""
   
if (url.indexOf("=")>0)
   
{
        name
= url.substring(url.indexOf("=")+1,url.length)
    }

   
return name;
}



/*
獲取指定的URL參數值
URL:http://www.blogjava.net/blog?name=bainian
參數:paramName URL參數
調用方法:getParam("name")
返回值:bainian
*/

//1.
function getParam(paramName)
{
        paramValue
="";
        isFound
=false;
       
if (this.location.search.indexOf("?") ==0&&this.location.search.indexOf("=")>1)
       
{
            arrSource
= unescape(this.location.search).substring(1,this.location.search.length).split("&");
            i
=0;
           
while (i < arrSource.length &&!isFound)
           
{
               
if (arrSource[i].indexOf("=") >0)
               
{
                    
if (arrSource[i].split("=")[0].toLowerCase()==paramName.toLowerCase())
                    
{
                        paramValue
= arrSource[i].split("=")[1];
                        isFound
=true;
                     }

                }

                i
++;
            }
  
        }

  
return paramValue;
}



//2.
function Request(sName)
{

 
/*
   get last loc. of ?
   right: find first loc. of sName
   +2
   retrieve value before next &
 
 
*/

 
 
var sURL =new String(window.location);
 
var sURL = document.location.href;
 
var iQMark= sURL.lastIndexOf('?');
 
var iLensName=sName.length;
 
 
//retrieve loc. of sName
  var iStart = sURL.indexOf('?' + sName +'=') //limitation 1
  if (iStart==-1)
       
{//not found at start
        iStart = sURL.indexOf('&' + sName +'=')//limitation 1
                if (iStart==-1)
                  
{//not found at end
                    return0; //not found
                   }
  
        }

       
  iStart
= iStart ++ iLensName +2;
 
var iTemp= sURL.indexOf('&',iStart); //next pair start
  if (iTemp ==-1)
               
{//EOF
                iTemp=sURL.length;
                }
 
 
return sURL.slice(iStart,iTemp ) ;
  sURL
=null;//destroy String
}

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