JS parse URL string, get parameter name, Ajax pass Request code example

The current page URL in the parameter analysis function, the regular validation function getquerystring (name) {    var reg = new RegExp ("(^|&)" + name + "= ([^&]*) (&|$ ) "," I ");    var r = window.location.search.substr (1). Match (reg);    if (r! = null) return unescape (r[2]); return null;    }  Function Zan () {//Gets the desired parameter value, the parameter in GetQueryString is string, the passed parameter name is the parameter name in the URL, you get var Docchannel = getquerystring ("Docchannel ");    var docid = getquerystring ("DocId"); var xmlhttp;if (window. XMLHttpRequest)  {//  for ie7+, Firefox, Chrome, Opera, Safari  xmlhttp=new XMLHttpRequest ();  } else  {//  for IE6, IE5  xmlhttp=new activexobject ("Microsoft.XMLHTTP");  } Xmlhttp.onreadystatechange=function ()  {  if (xmlhttp.readystate==4 && xmlhttp.status==200)    {    document.getElementById ("Zanspan"). Innerhtml=xmlhttp.responsetext;    }  } Xmlhttp.open ("GET", "./manager/zan+1.jsp?t=" +math.random () + "&docid=" +docid+ "&docchannel=" +docchannel+ "" , true); Xmlhttp.send ();}

JS parse URL string, get parameter name, Ajax pass Request code example