Zymic Webmaster Forums > Set Var To File Or Textarea

Full Version: Set Var To File Or Textarea

Zymic Webmaster Forums > Web Design & Development > Client Side Scripting > JavaScript

Symasta

May 8 2008, 02:25 AM

Hey
I bet someone can help me here.
I am using javascript and I am trying to set a variable equal to a textarea, so that I can use whatever I put in the textarea and replace parts of it after a certain way.
My code (that does not work)

<html>
<head>

<script type="text/javascript">

function replace()
{
var txt=document.getElementsByTagName("*what goes in here???*");
alert(txt);
document.write(txt.replace(/something/g, "somethingelse"));
}

</script>
</head>
<body>
<form id="textarea" onsubmit="replace()">
<textarea rows="10" cols="30">
TEXTTEXTTEXT
</textarea>
<input type="submit" id="submit" value="Submit" />
</form>

</body>
</html>

----------------------------------------------------------------------------------

The other problem I have:
I am trying to execute a javascript function, and this function should include a .php text file on the current page.
(So that it would work like a php include)
But any way I try, my javascript code does not work.
Any suggestions?

Thanks for your help

Symasta

May 8 2008, 12:49 PM

You're using 'getElementsByTagName' this is for pulling an array of all nodes with that tag name, pretty sure you're looking to use 'getElementById', your replace function would simply be:

CODE

function replaceText()
{
var txt = document.getElementById('textarea').value;
document.write('txt.replace(/something/g, 'somethingelse');
}

In regards to retrieving a remote file for inclusion, have a look into XHR (also known as AJAX), I have written a library called simplejax (it's the javascript one, not the php one!) and this would make it a doddle:
http://simplejax.sourceforge.net

This example should help with what you're trying:
http://simplejax.sourceforge.net/#dynamic

If you find it's cached, append a timestamp to the end, like here:
http://simplejax.sourceforge.net/#argument

Hope that helps.

Symasta

May 9 2008, 12:45 AM

Thanks alot!
The first one worked.
Had to set the id of the actual textarea to textarea and then it worked perfectly fine.
Have another two questions though.
I am trying to reshape a forum text, so I will have more than one replacement, BUT I do not want to write it again every single time.
That is what a
document.write(txt.replace(/something2/g, 'somethingelse'));
for every new replacement would do.
how do I add replacements. With an array or how?
and how do I do replacements if I have some words that are always the same and some that vary so
Name X o'clock at X(date)
and I have a vary of 35 names which I could put in, but the rest is time and date, and I want to replace it with another code...how do I do that?

Your sides looked like they are what I probably need, I just don't have the time right now to check it.

Thanks alot

Symasta

This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.