Common ways for JavaScript to get URL information

Take "http://www.cnblogs.com/wuxibolgs329/p/6188619.html#flag?test=12345" as an example, and then get the various components of it.

1 . Get the full URL of the page

var a=location.href; Console.log (a); //"http://www.cnblogs.com/wuxibolgs329/p/5261577.html#flag?test=12345"

2. Get the domain name of the page

var host = Window.location.host; //www.cnblogs.com

var host2 = document.domain; //www.cnblogs.com

var a = Location.hostname; //www.cnblogs.com

3. get the URL agreement

var a=location.protocol;console.log (a); //http:

4. Get the Port

var a=location.port;console.log (a);

5. get the page path

var a=location.pathname;console.log (a);

6. set or get the protocol portion of the URL

var a = Location.protocol;

7 . Get the part after #

var A=window.location.hash; var b=a.substr (1);　Console.log (b); //flag?test=12345

8. get the href attribute with the question mark in the following section

At this point the case address changes to "http://www.cnblogs.com/wuxibolgs329/p/5261577.html? test=12345". Get test=12345

var A=location.search;
var b=a.substr (1);
Console.log (b);

If the case is still "http://www.cnblogs.com/wuxibolgs329/p/5261577.html#flag?test=12345", the following wording is required to get test=12345
var a=location.href;
var b=a.substr (A.lastindexof ('? ') +1);
Console.log (b);

9. Get the part after the = sign

var A=location.href;var b=a.substring (a.lastindexof (' = ') +1); Console.log (b); 12345

Common ways for JavaScript to get URL information