<script>
function goto_url(url){
var new_url = "http://shop.usteel.com/index.php?app=list_release";
var d_date = getParameter("date",url);
if(d_date != '' ){
new_url += "&"+d_date;
}
var species = getParameter("species",url);
if(species != ''){
new_url += "&"+species;
}
window.open(new_url);
}
//Javascript gets the specified parameter and its corresponding value & NBSP;
function getParameter(paraStr, url)
{
var result = "";
//Gets all parameter list data & NBSP; in the URL;
var str = "&" + url.split("?")[1];
var paraName = paraStr + "=";
//Determining whether the parameter to be obtained exists & PI;
if(str.indexOf("&"+paraName)!=-1)
{
//If the parameter you want to get also contains an "&" & PI to the end;
if(str.substring(str.indexOf(paraName),str.length).indexOf("&")!=-1)
{
//Gets the string & PI that takes the argument to the end;
var TmpStr=str.substring(str.indexOf(paraName),str.length);
//Intercepts the character & NBSP; from the beginning of the argument to the nearest & position;
result=TmpStr.substr(TmpStr.indexOf(paraName),TmpStr.indexOf("&")-TmpStr.indexOf(paraName));
}
else
{
result=str.substring(str.indexOf(paraName),str.length);
}
}
else
{
result="";
}
return (result.replace("&",""));
}
</script>The following example is very well tested
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>javascript To obtain URL Parameter and parameter value </title>
<script type="text/javascript">
<!--
var url = "http://www.baidu.com/?age=25&k=1&site=asp&abc=123;"
//Javascript gets the specified parameter and its corresponding value & NBSP;
function getParameter(paraStr, url)
{
var result = "";
//Gets all parameter list data & NBSP; in the URL;
var str = "&" + url.split("?")[1];
var paraName = paraStr + "=";
//Determining whether the parameter to be obtained exists & PI;
if(str.indexOf("&"+paraName)!=-1)
{
//If the parameter you want to get also contains an "&" & PI to the end;
if(str.substring(str.indexOf(paraName),str.length).indexOf("&")!=-1)
{
//Gets the string & PI that takes the argument to the end;
var TmpStr=str.substring(str.indexOf(paraName),str.length);
//Intercepts the character & NBSP; from the beginning of the argument to the nearest & position;
result=TmpStr.substr(TmpStr.indexOf(paraName),TmpStr.indexOf("&")-TmpStr.indexOf(paraName));
}
else
{
result=str.substring(str.indexOf(paraName),str.length);
}
}
else
{
result=" Without this parameter ";
}
return (result.replace("&",""));
}
//Var variable name = getParameter(" parameter name to be obtained ", URL address)& PI;
var r = getParameter("age",url);
//Test output: site=popasp
alert(r);
//Depending on the result, you can use & NBSP;
var pName = r.split("=")[0]; //Gets the parameter name & NBSP;
var pValue = r.split("=")[1]; //Gets the parameter value & PI;
//Test output: & NBSP;
alert(" Parameter name: " + pName + "nn" + " Parameter values: " + pValue);
//Other practical applications: & NBSP;
//According to the need, with the following methods to achieve their own functions;
//var hostname = location.hostname; // Get the current domain name ( Does not contain http://)
//var localurl = location.href; // Gets the current complete URL Address information ( contains http:// , domain name, path, specific file and all pass parameters )
//var referurl = document.referrer; // Get the full version of the previous page URL information ( contains http:// , domain name, path, specific file and all pass parameters )
//-->
</script>
</head>
<body>
</body>
</html>