[JavaScript] 用js如何获取当前url地址中的域名-优快云博客

本文介绍了一种使用JavaScript获取当前网页域名的方法，并提供了多个示例代码片段。通过正则表达式匹配URL来提取域名部分，适用于不同场景下的应用。

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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;
}
alert(getHost());
alert(getHost('https://test.com'));
alert(getHost('http://test.com/123.html'));

复制代码

thisTLoc = top.location.href; thisPLoc = parent.document.location; thisTHost = top.location.hostname; thisHost = location.hostname; strwrite = "thisTLoc:[" + thisTLoc + "] " strwrite += " thisPLoc:[" + thisPLoc + "] " strwrite += " thisTHost:[" + thisTHost + "] " strwrite += " thisHost:[" + thisHost + "] " 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
functionGetParam(){
varurl=document.location.href;
varname=""
if(url.indexOf("=")>0)
{
name=url.substring(url.indexOf("=")+1,url.length)
}
returnname;
}

/*
获取指定的URL参数值
URL:http://www.blogjava.net/blog?name=bainian
参数：paramNameURL参数
调用方法:getParam("name")
返回值:bainian
*/
//1.
functiongetParam(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++;
}
}
returnparamValue;
}

//2.
functionRequest(sName)
{

/*
getlastloc.of?
right:findfirstloc.ofsName
+2
retrievevaluebeforenext&

*/

varsURL=newString(window.location);
varsURL=document.location.href;
variQMark=sURL.lastIndexOf('?');
variLensName=sName.length;

//retrieveloc.ofsName
variStart=sURL.indexOf('?'+sName+'=')//limitation1
if(iStart==-1)
{//notfoundatstart
iStart=sURL.indexOf('&'+sName+'=')//limitation1
if(iStart==-1)
{//notfoundatend
return0;//notfound
}
}

iStart=iStart++iLensName+2;
variTemp=sURL.indexOf('&',iStart);//nextpairstart
if(iTemp==-1)
{//EOF
iTemp=sURL.length;
}
returnsURL.slice(iStart,iTemp);
sURL=null;//destroyString
}