Explain JavaScript common ways to get URL information _javascript tips

First 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 complete 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 URL Protocol

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 URL of the Protocol section

var a = location.protocol;

7, get the part after the #

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

8, get the href attribute followed by the question mark?

The case address changes to "http://www.cnblogs.com/wuxibolgs329/p/5261577.html?test=12345" at this time. 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 = number

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

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