JavaScript獲取QueryString

//獲取QueryString的數組

function getQueryString(){

     var result = location.search.match(new RegExp("[\?\&][^\?\&]+=[^\?\&]+","g")); 

     if(result == null){

         return "";

     }

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

         result[i] = result[i].substring(1);

     }

     return result;

}

//根據QueryString參數名稱獲取值

function getQueryStringByName(name){

     var result = location.search.match(new RegExp("[\?\&]" + name+ "=([^\&]+)","i"));

     if(result == null || result.length < 1){

         return "";

     }

     return result[1];

}

//根據QueryString參數索引獲取值

function getQueryStringByIndex(index){

     if(index == null){

         return "";

     }

     var queryStringList = getQueryString();

     if (index >= queryStringList.length){

         return "";

     }

     var result = queryStringList[index];

     var startIndex = result.indexOf("=") + 1;

     result = result.substring(startIndex);

     return result;

}