Check Server HTTP Headers with CURL

Check Server HTTP Headers with CURL

Get URL Parameters Using Javascript

Get URL Parameters Using Javascript

An easy way to parse the query string in your URL to grab certain values.

Source: http://www.netlobo.com/url_query_string_javascript.htmlexpressions. Here is the function:

function gup( name )
{
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regexS = "[\\?&]"+name+"=([^&#]*)";
var regex = new RegExp( regexS );
var results = regex.exec( window.location.href );
if( results == null )
return "";
else
return results[1];
}

The way that the function is used is fairly simple. Let's say you have the following URL:
http://www.foo.com/index.html?bob=123&frank=321&tom=213#top
You want to get the value from the frank parameter so you call the javascript function as follows:

var frank_param = gup( 'frank' );

Now if you look at the frank_param variable it contains the number 321. The query string was parsed by the regular expression and the value of the frank parameter was retrieved. The function is smart in a couple of ways. For example, if you have an anchor in your URL like our example URL above does (#top) the gup() function knows to stop before the # character. Also, if a requested parameter doesn't exist in the query string then an empty string is returned instead of a null.