JS获取URL参数

/*


获取URL中最后一项参数的值


*/




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>




//以下是函数的写法


function GetParam(){


var url = document.location.href;


var name=""


if (url.indexOf("=")>0)


{


name = url.substring(url.indexOf("=")+1,url.length)


}


return name;


}






/*


获取指定的URL参数值


URL:http://www.blogjava.net/blog?name=bainian


参数：paramName URL参数


调用方法: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


return 0; //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


}