Javascript in the address/URL bar

[stepheno]

I want to run some Javascript from the address bar (newlines included
for readability):

javascript:
location='http://www.example.com/page.html';
var num =
document.getElementById('content').getElementsByTagName('input')
[0].value;
document.write("Number is" + num);

In English:

1. Load a page
2. Get "123" from <div id="content"><input value="123" /></div>
3. Display the number ("123") to the user

I need to work when put in the address bar at any URL. However, it
only seems to work from 'http://www.example.com/page.html' (i.e. the
page I'm intending to load.)

Any ideas?

 

[stepheno]

I explained badly.

I want to load one page, http://www.example.com/page.html, and perform
the operations on it.

However, the javascript to load and perform the operations needs to be
able to run from a page different to http://www.example.com/.

It only gets as far as loading http://www.example.com/page.html and
doesn't execute as far as document.write("Number is" + num);

The input itself is a hidden one.

 

[stepheno]

Hi, thanks again for responding.

I simply need them to be able to click a link like

<a href="javascript:document.location('http://www.example.com/
page.html'); var num =
document.getElementById('content').getElementsByTagName('input')">Get
the number</a>

in email, or similar.

However, it only works when pasted to the address bar when
http://www.example.com/page.html is currently open. Otherwise, it
simply loads http://www.example.com/page.html.

I'll try and make an example URL this evening--unfortunately the
actual one is sensitive.

Thanks for your help, and patience,

Stephen

[0].value;
document.write("Number is" + num);

 

[stepheno]

You just don't grasp top-posting or not do you?

You just don't grasp basic English syntax or not do you? You just
don't grasp being polite or not do you?

Because that is what the script tells it to do. After the
document.location is set the script is discarded.

Ah, I see. Web design, not JS, is what I do so excuse my noobishness.

Thanks for your help!