Creating A Code Generator In Javascript - Is It Possible?

I have seen quite a few code generators over time where you are presented with a form, you fill in the various fields in the forum, and then click a Generate Code button, and the results show up in a textarea.

The code is then copied from the textarea and pasted into notepad or directly into an HTML document.

So, you may have some code that you want to generate that looks like this:

In this particular case there is 1 .js files that go to the root of the site that requires no editing.

Then there is 1 .css file that may require changes depending on user preferences. Things like margin, width, height, border and so on.

Then there is a section that goes into the Head of the document that requires no changes.

Then there is something like this would go inside a division"
<a href="address to a page" target="an iframe name"><img src="path to thumbnails/thumbnail name" border="1"></a>
Note that the above code has variable that would change based on user preferences. The way the code is presently structured it is not done as an array, however, this would substantially shorten the code depending on how many thumbnails are in it.

And finally there is another iframe section that would go inside a couple of a division. It relates to a second iframe.

Before I go any further with this, I just wanted to know if it's possible to do with javascript or is it best to do in another language.

The variables don't have to be kept in a database. What I am thinking is that the user would simply open up the HTML page, enter the data, generate the code, copy/paste and test, without closing the page. If there is a problem, he/she would simply go back in and change a variable or 2 and re-generate the code.