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How to set a custom href into a button when onClick?

I have a URL
http://localhost:8080/BIM/teacher/reports/section-exercise/assignment?x=1&y=2&z=3
I have 2 btns
I'm not sure how would I bind those 2 btn to the correct URL.
If the Remediation is clicked, I want to set the href to
http://localhost:8080/BIM/teacher/reports/section-exercise/remediation?x=1&y=2&z=3
The only different is the 4th segment, the rest stay the same.
Any helps / suggestions on them will be much appreciated !
I guess - I might have to :
grab the whole URL
re-construct the newURL, store it in a variable
bind that newURL to my btn.
I hope I'm in the right track for this.
Let me know if you guys, notice something.

Here you can change the URL to what ever you like.
I am using Replace fucntion to change the URL on the fly
var url='http://localhost:8080/BIM/teacher/reports/section-exercise/assignment?x=1&y=2&z=3'
$('button1').click(function() {
$(this).attr('href', url);
});
$('button2').click(function() {
$(this).attr('href', url.replace('assignment','remediation');
});

$(/*remediation button selector*/).click(function() {
$(/*assignment performance button selector*/).attr('href', 'http://localhost:8080/BIM/teacher/reports/section-exercise/remediation?x=1&y=2&z=3');
});
I'm not sure if you meant you want the Remediation button to change the href for the first button, or if you want them to just have different hrefs; if it's the latter, they can just have the different hrefs directly in the HTML, no JS needed.

Aminas answer is good, but in case the first URL isn't always the same I would recommend this function (using Regex) to change only the file name of an URL:
function changeFileName(strURL, strNewName) {
return strURL.replace(/[^\/?]*(?=\?|$)/, strNewName);
}
This (a) works no matter what the original file name was, and (b) won't cause problem if the path contains the file name.

Split value of a html tag

I would like to split some content from an "a" html tag. I was starting over with jquery. My code is like this but it is not working:
$("a.uribb").each(function() {
var id = $(this).attr("href").replace("http://dereferer.org/?", "");
$(this).append(+id+);
});
​
And the HTML tag is this:
<a href="http://dereferer.org/?http://example.com/" target="_blank" class="uribb">
http://example.com/
</a>
I wanted to split out the http://dereferer.org/? part and leave the other there. How could I do this?

Try to use .text() instead of .append() if you want to replace the content. Also, there is no need for the + before and after the id.
You could try this instead:
var id = $(this).attr("href").replace("http://dereferer.org/?", "");
$(this).text(id);
Update
Reading through the question again, I'm not sure if you want to replace the content of the a-tag or the the value of the href. In case of the latter, try this:
var id = $(this).attr("href").replace("http://dereferer.org/?", "");
$(this).attr("href", id);
Notice
Since jQuery 1.6, it is preferred to use .prop() instead of .attr().

How about that?
$("a.uribb").attr("href", function(i, val) {
return val.substring(val.indexOf("?") + 1);
});​
DEMO: http://jsfiddle.net/zQdL4/
It's interesting but for your markup the following code should also work :)
$("a.uribb").attr("href", function() {
return $.trim(this.innerHTML);
});​

Right, so what you want is this.
<a href="http://example.com/">...
Try this.
$("a.uribb").each(function() {
var indirect_url = $(this).prop("href");
var direct_url = indirect_url.replace("http://dereferer.org/?", "")
$(this).prop('href', direct_url);
});
You could of course do this in fewer lines, but this way it's clear what's going on. Specifically, replace() does not modify the string it operates on.

Replace a href with a js function call

I want to replace an url in a href with a call of a function that needs to include the url.
example:
I have the following string:
Google
some other text
Wikipedia
I want to get back a string like this:
Google
some other text
Wikipedia
I have tested some ways with RegEx, but I'm not good with RegEx. Does anyone have a solution for my problem?
EDIT:
Sorry, I forgot to write. I'm building an appcelator application. I can't use jQuery or "document". I think the only way is a RegEx.

Give this regex a try:
/href="([^"]+)/g
Here is a sample of its usage (JsFiddle Demo)
var subject = 'Googlesome other textWikipedia';
var result = subject.replace(/href="([^"]+)/g, 'href="javascript:anyFunction(\'$1\')');

If you give your hrefs unique IDs you can do this:
var val = $("#myHref").attr("href");
$("#myHref").attr("href", "javascript:anyFunction('"+val+"');");
If you want to avoid unique IDs then you can do this (applied to all a's):
​$("a").each(function() {
var val = $(this).attr("href");
$(this).attr("href", "javascript:anyFunction('"+val+"');");
});​​​
If you want to avoid applying this to all hrefs you can give all the hrefs you want changed a class then use a selector like this: $(".hrefToModify")...

NEW:
If you can use javascript, then can you get access to the anchor tag itself? if so:
anchor_element.href = "javascript:anyFunction('" + anchor_element.href + "')";
OLD:
<a id="link1" href="www.google.com">Google</a>
some other text
<a id="link2" href="www.wikipedia.org">Wikipedia</a>
<script>
document.getElementById('link1').addEventListener('click', function(e) {
alert('hello');
e.preventDefault();
return false;
});
</script>

Get a value from an attribute and add it as another attribute?

How can I use jQuery to get a string of text from the onclick attribute and set it as the href attribute.
Here's the fiddle I'm working with: http://jsfiddle.net/MBmt5/
I want to take only TrackPackage.asp?track=95213&ship=OTHER&ShippingMethod=3 from the onclick attribute and prop it to an href attribute
So that it would end up looking like this: http://jsfiddle.net/52Nha/
Unfortunately, I have no idea how to accomplish this. Can anybody help me? Must be compatible with jQuery 1.4.2. Thanks.
Update
Of course I'd begin with:
$(document).ready(function(){
$('span.trackpackagebutton').closest('a').removeAttr('href');
});
​

Ugly but I hope this will help you.
$('a').attr('href',
$('a')[0].getAttribute('onclick')
.replace("window.open('", '').split(',')[0].replace("'", ''))
.removeAttr('onclick');​​​​​​​​​​​​​​​
Working demo - http://jsfiddle.net/MBmt5/5/
Note: Based on your markup structure you can use the right selector and reuse the above code.
E.g: The below code will execute this logic for all the anchors on the page which have onclick attribute which has window.open.
$('a[onclick^="window.open"]').each(function(){
$(this).attr('href',
this.getAttribute('onclick')
.replace("window.open('", '').split(',')[0].replace("'", ''))
.removeAttr('onclick');​​​​​​​​​​​​​​​
});

Here's one way:
http://jsfiddle.net/MBmt5/2/

http://jsfiddle.net/GaZGv/1
var $a = $('span.trackpackagebutton').closest('a');
var href = $a.attr('onclick').split('(')[1].split(',')[0].replace(/'/g, '');
$a.attr('href', href).removeAttr('onclick');
alert(href)​

make hyperlink from javascript

I want to use a hyperlink string in HTML page which I want to declare source link (URL) in my js file. Please tell me how can I call that URL from my js into html.
Thanks

There are a number of different ways to do this. You could use document.createElement() to create a link element, and then inject the element into the DOM. Or you could use the .innerHTML property of an element that you already have on the page to insert the link using text. Or you could modify the "href" attribute of an existing link on the page. All of these are possibilities. Here is one example:
Creating/Inserting DOM Nodes with DOM Methods
var link = document.createElement('a');
link.textContent = 'Link Title';
link.href = 'http://your.domain.tld/some/path';
document.getElementById('where_to_insert').appendChild(link);
Assuming you have something like this in your HTML:
<span id="where_to_insert"></span>
Creating/Inserting DOM Content with innerHTML
And another example using innerHTML (which you should generally avoid using for security reasons, but which is valid to use in cases where you completely control the HTML being injected):
var where = document.getElementById('where_to_insert');
where.innerHTML = 'Link Title';
Updating the Attributes of a Named DOM Node
Lastly, there is the method that merely updates the href attribute of an existing link:
document.getElementById('link_to_update').href = 'http://your.domain.tld/path';
... this assumes you have something like the following in your HTML:
<a id="link_to_update" href="javascript:void(0)">Link Title</a>

Try this:
var alink = document.createElement("a");
alink.href = "http://www.google.com";
alink.text = "Test Link";
document.getElementsByTagName("body")[0].appendChild(alink)

From whatever I understand, You want to update href with JS variable.
You can use Jquery to achieve it.
try $("a").attr("href", js_variable)
Refer this for more details
How to change the href for a hyperlink using jQuery

It seems like you would be able to do something like this:
Using Javascript.
var col2= document.getElementById('id_Of_Control');
col2.innerHTML="<a href='page2.html?" + params + "'>Page 2</a>";
where col2 is another container control something like div,span, or any.
Using jQuery.
Here I will recommend you to Use jQuery. So you can be more dynamic.
$("#col2").append("Page 2");
OR
$("#col2").after("Page 2");
OR
$("#col2").before("Page 2");