鉴于我在下面这一页

http://www.webmail.com/pages/home.aspx

如何用JavaScript检索主机名(“http://www.webmail.com”)?


当前回答

要获取主机名:location.hostname

但你的例子也在寻找方案,也就是位置。在Chrome中,origin似乎可以做你想做的事情,但在Mozdev文档中却没有提及。你可以用

location.protocol + '//' + location.hostname

如果你也想要端口号(当它不是80时),那么:

location.protocol + '//' + location.host

其他回答

您可以使用以下命令获取协议、主机和端口:

window.location.origin

浏览器兼容性

桌面

Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
(Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
30.0.1599.101 (possibly earlier) ? 21.0 (21.0) 11 ? 7 (possibly earlier, see webkit bug 46558)

移动

Android Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
(Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
30.0.1599.101 (possibly earlier) ? 21.0 (21.0) ? ? 7 (possibly earlier, see webkit bug 46558)

所有浏览器兼容性都来自Mozilla开发者网络

我喜欢这个,取决于目的

window.location.href.split("/")[2] == "localhost:17000" //always domain + port

你可以在任何url字符串上应用它

var url = "http://localhost:17000/sub1/sub2/mypage.html?q=12";
url.split("/")[2] == "localhost:17000"
url.split("/")[url.split("/").length-1] == "mypage.html?q=12"

从url-string(相对路径)中删除协议,域和路径

var arr = url.split("/");
if (arr.length>3)
   "/" + arr.splice(3, arr.length).join("/") == "/sub1/sub2/mypage.html?q=12"

要获取主机名:location.hostname

但你的例子也在寻找方案,也就是位置。在Chrome中,origin似乎可以做你想做的事情,但在Mozdev文档中却没有提及。你可以用

location.protocol + '//' + location.hostname

如果你也想要端口号(当它不是80时),那么:

location.protocol + '//' + location.host
let path = window.location.protocol + '//' + window.location.hostname + ':' + window.location.port;
// will return the host name and port
var host = window.location.host; 

或可能

var host = window.location.protocol + "//" + window.location.host;

或者如果你喜欢串联

var protocol = location.protocol;
var slashes = protocol.concat("//");
var host = slashes.concat(window.location.host);

// or as you probably should do
var host = location.protocol.concat("//").concat(window.location.host);

// the above is the same as origin, e.g. "https://stackoverflow.com"
var host = window.location.origin;

如果您有或期望自定义端口,请使用window.location.host而不是window.location.hostname