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How to remove url parameters

Here is my JavaScript:

current_URL = document.location.href;
top.location.href='http://www.IDPCessna.com/Entities.aspx' + current_URL.substring(current_URL.indexOf('?')) +'&QueryType=Sales&TypeSeller='+ document.forms["_ctl0"].SalesEvents1TypeSeller.value;

How can I completely remove the TypeSeller parameter before adding it a second time in line 2? This parameter does not always exist before reaching line 2, in which case the code works perfectly. But if it does exist, it get's added again.

novicer

try this:
var url = "http://www.IDPCessna.com/Entities.aspx?QueryType=Sales&TypeSeller=aaaa";
var newurl = current_URL.replace(/&TypeSeller([\S])+/g,"");
the newurl is now http://www.IDPCessna.com/Entities.aspx?QueryType=Sales
Hope this may help.

SOLUTION

novicer

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Zvonko

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n3089n

ASKER

The answer for me:

current_Query=window.location.search;
current_Query=current_Query.replace(/&TypeSeller([\S])+/g,"");
top.location.href='http://www.IDPCessna.com/Entities.aspx' + current_Query +'&QueryType=Sales&TypeSeller='+ document.forms["_ctl0"].SalesEvents1TypeSeller.value;

The QueryType parameter is not part of the current query. Nevertheless, excellent insight Zvonko. Thank you both for the fast and excellent help!

Zvonko

You are welcome.

Legion0

i am working on a good function to do this in JScript (for ASP) but it works in JavaScript too OFC, i know this topic is old but it came up on google and id like to hear what people think (and help ofc if i can)

function removeParamFromURL(URL,param)
{
	URL = String(URL);
	var regex = new RegExp( "\\?" + param + "=[^&]*&?", "gi");
	URL = URL.replace(regex,'?');
	regex = new RegExp( "\\&" + param + "=[^&]*&?", "gi");
	URL = URL.replace(regex,'&');
	URL = URL.replace(/(\?|&)$/,'');
	regex = null;
	return URL;
}
 
function addParamToURL(URL,param,value)
{
	URL = removeParamFromURL(URL,param);
	URL = URL + '&' + param + '=' + value
	if (!(/\?/.test(URL))) URL = URL.replace(/&/,'?');
	return URL;
}

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