[JavaScript] 用js如何获取当前url地址中的域名

1. var getHost = function(url) { 
   
2.         var host = "null";
   
3.         if(typeof url == "undefined"
   
4.                         || null == url)
   
5.                 url = window.location.href;
   
6.         var regex = /.*\:\/\/([^\/]*).*/;
   
7.         var match = url.match(regex);
   
8.         if(typeof match != "undefined"
   
9.                         && null != match)
   
10.                 host = match[1];
    
11.         return host;
    
12. }
    
13. alert(getHost());
    
14. alert(getHost('https://test.com'));
    
15. alert(getHost('http://test.com/123.html'));

复制代码

<script type="text/javascript"> 
 
thisURL = document.URL; 
thisHREF = document.location.href; 
thisSLoc = self.location.href; 
thisDLoc = document.location; 
strwrite = " thisURL: [" + thisURL + "]<br />" 
strwrite += " thisHREF: [" + thisHREF + "]<br />" 
strwrite += " thisSLoc: [" + thisSLoc + "]<br />" 
strwrite += " thisDLoc: [" + thisDLoc + "]<br />" 
document.write( strwrite ); 
 </script>

 <script type="text/javascript">

thisTLoc = top.location.href; 
thisPLoc = parent.document.location; 
thisTHost = top.location.hostname; 
thisHost = location.hostname; 
strwrite = " thisTLoc: [" + thisTLoc + "]<br />" 
strwrite += " thisPLoc: [" + thisPLoc + "]<br />" 
strwrite += " thisTHost: [" + thisTHost + "]<br />" 
strwrite += " thisHost: [" + thisHost + "]<br />" 
document.write( strwrite ); 
 </script>

 <script type="text/javascript"> 

tmpHPage = thisHREF.split( "/" ); 
thisHPage = tmpHPage[ tmpHPage.length-1 ]; 
tmpUPage = thisURL.split( "/" ); 
thisUPage = tmpUPage[ tmpUPage.length-1 ]; 
strwrite = " thisHPage: [" + thisHPage + "]<br />" 
strwrite += " thisUPage: [" + thisUPage + "]<br />" 
document.write( strwrite ); 
 </script>

搜索标签： 获取 当前域名js获取当前域名[阅读次数：866次]  [发布时间：2010年12月12日]

<script>
alert(location.hostname)
alert(location.port)
alert(location.pathname)
alert(location.search)
</script>

<script>
function winsx(url)        //URL传递的参数
{
var winurl =url?url:(unescape(window.location.href));
var wlp = winurl.split("?")[1];
var wincs = wlp.split("&");
for(var i=0; i<wincs.length; i++)
{
    var tur = wincs[i].split("=");
    eval('this.'+tur[0]+'="'+tur[1]+'";');
}
}
var ug = new winsx("http://www.yourname.com/aa/bb.php?val=11&test=2");
alert(ug.val)
alert(ug.test)
</script>

还有一种稍有些复杂的取域名的方法，也是过滤了文件夹名，文件名，参数……

var getHost = function(url) 
{
var host = "null";
if(typeof url == "undefined"|| null == url)
{ 
    url = window.location.href;
}
   var regex = /.*\:\/\/([^\/]*).*/; 
var match = url.match(regex); 
if(typeof match != "undefined" && null != match)
{
    host = match[1];
}
return host;
}

//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
}