How to use js to get the current domain name, Url, relative path and parameters

1. There are two ways to get the current domain name by js

1. Method 1

var domain = ;

2. Method 2

var domain = ;

3. Pay attention to problems

Since the current domain name obtained does not include http://, when assigning the obtained domain name to the href of the tag a tag, don't forget to add http://, otherwise the navigation error will occur when clicking the link.

2. 4 ways to get the current Url

var url = ;
var url = ;
var url = ;

var url = ;

What is displayed in the browser address bar and what is the url you get.

3. Methods to obtain the current relative path

First get the Url, then cut the Url into two parts through //, and then cut the relative path from the latter part. If there are parameters in the intercepted relative path, remove the parameters.

function GetUrlRelativePath()
{
var url = ();
var arrUrl = ("//");
var start = arrUrl[1].indexOf("/");
var relUrl = arrUrl[1].substring(start);//stop omits, intercepts all characters from start to endif(("?") != -1){
relUrl = ("?")[0];
}
return relUrl;
}

Call method: GetUrlRelativePath();

For example: If the current Url is http// www.liangshunet. com/pub/?t=osw7, the relative path intercepted is: /pub/.

4. Methods to obtain the current Url parameters

1. Get the Url parameter part

function GetUrlPara()
{
var url = ();
var arrUrl = ("?");
var para = arrUrl[1];
return para;
}

Call method: GetUrlPara()

For example: If the current Url is http// www.liangshunet. com/pub/?t=osw7, the intercepted parameter part is: t=osw7.

Summarize

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