JS method to get page URL

we can use Javas . Cript get all the parts

1, Window.location.href

The entire URL string (in the browser is the full address bar)

This example returns the value: http://ifisker.com/blog/post/0703/window.location.html#

2,window.location.protocol

The protocol portion of the URL

This example returns the value: http:

3,window.location.host

The host part of the URL

This example returns the value: Www.x2y2.com

4,window.location.port

The port portion of the URL

If you are using the default 80 port (update: Even if you added: 80), the return value is not the default of 80 but the null character

This example returns the value: ""

5,window.location.pathname

The path portion of the URL (that is, the file address)

This example returns the value:/fisker/post/0703/window.location.html

6,window.location.search

Query (Parameters) Section

in addition to assigning values to dynamic languages, we can also give static pages and use Javas cript to get the parameter value of the phase letter

This example returns the value:? ver=1.0&id=6

7,window.location.hash

Anchor Point

This example returns the value: #imhere

Parameters of URL & parameter name 1=xxxx& parameter name 2=xxxx& parameter name 3=xxxx

function     getquerystring (name)      {          var    reg   =   new    RegExp ("(^|& ) "+    name   +" = ([^&]*) (&|$) ");           var    R   =    window.location.search.substr (1). Match (reg);          if    (r!=null)   return    (R[2]);   return   NULL ;      }      Alert (getquerystring ("parameter name 1"));      Alert (getquerystring ("parameter name 2"));      Alert (getquerystring ("parameter name 3"));

such as: http://www.cnblogs.com/EditPosts.aspx?a=1&b=2&c=3

b = getquerystring ("B"); [b=2]

Convert to Digital parseint (NUM)

function   Geturlparam (name) {            var   reg   =   new   RegExp ("(^|&) "+   name   +" = ([^&]*) (&|$) ");             var   R   =   window.location.search.substr (1). Match (reg);             if   (r!=null)   return   (R[2]);   return   NULL ;      }

If aa.aspx?id=3

Call only Geturlparam ("id") to get 3

For example, I want to use JS to intercept this link http://www.abc.com/?id=9&keywords=milk&sid=1
This section of the Keywords=milk, and each time this paragraph will be connected with the change, such as Keywords=orange interception, it is necessary to pay a value to a variable
var = "Keywords=orange";

 var url= "http://www.abc.com/?id=9&keywords=apple&sid=1"; 
 P=geturlparams (URL); 
 var v= "keywords=" +p["keywords"] 
 alert (v); 
 
 function  geturlparams (URL) //  Gets the page URL parameter  { var  urlparams = new   Object ();  var  aparams = Url.split (' & '  for  (i=0; i < aparams.length; I++ var  Aparam = aparams[i].split (' = ' ); urlparams[aparam[ 0]] = Aparam[1];}  return   Urlparams;}  </script> 

JS method to get page URL