I don’t know a huge amount of javascript but i work with a lot of developers and understand the concepts

I’d probably read up on unobtrusive methods, DOM manipulation and javascript frameworks such as jquery.

Many programmers look down on Javascript, but it’s a powerful language with some object orientation (and admittedly many unshakable design faults). It does allow you to write very scrappy code, and the scoping is odd. You can embed JS anywhere in your HTML (XML too), or put it in a separate include files, and you can attach JS functions to HTML objects to act on user events and page/image loading. Your JS code can be used for writing parts of the HTML in a page (including ITS JS 🙂 [though this is increasingly frowned upon], and in event handlers JS code has full access to the DOM (Document Object Model) so that it can modify the page (and its CSS) dynamically. Also JS can use various methods to access the server to update the page without reloading the whole thing (often referred to as AJAX [Asynchronous Javascript A? XML) – though in this case the XML bit is just as much misdirection as the ‘Java’ in Javascript, as JS has NOTHING to do with Java, and AJAX only nominally involves XML.

Not that hard a language.

Try:

http://www.w3schools.com/JS/default.asp
http://www.4guysfromrolla.com/webtech/111599-1.shtml
http://www.webteacher.com/javascript/index.html

It looks like C# (and therefore by extension C / C++?)

Loops:

for (i = 0; i < x; i ++)
{
// code loop here
}

‘while’ and ‘do’ loops are similar.

‘if’ statements:

if (i == x)
{
// code for i is equal to x
}
else
{
// code for i is not equal to x
}

Note the ‘==’, otherwise (with a single ‘=’) you are assigning a value to i

So, if you have a form element (probably in this case a text box) named ‘txtFirstName’ your code to make sure it contains a value would be something like:

if (document.getElementByID(‘txtFirstName’).text == ”)
(
alert(‘First name is required’); // note double slash for the comment
return false; // ‘return false’ to exit code
}

‘alert’ puts up the (annoying) message! Yes, I know this doesn’t validate ‘ ‘ entries (ie, those with spaces entered) but they’re not hard to code around…

Hope this helps – email me at vdub1992[at]hotmail[dot]com if you want some examples. I’m sure I can dig some out.

My programming ‘lightbulb’ moment was when I realised that all languages do the same thing, they just say it differently! (With, I guess, some exceptions: ADA maybe?).

Shoot me down if you want, STW massif, I’m just trying to recall some stuff!

Sorry, several posts happened whilst I was typing!

It looks like C# (and therefore by extension C / C++?)
Chronology
C
C++ (actually a subset of C)
C# (Microshafts answer to Java – JScript was their answer to JavaScript)

But lets not confuse the issues 🙂

Extended chronology
BCPL
B
C
C++
C#

Sorry, what was that about not confusing things 😀

Good points, molgrips.

http://www.oreilly.com/catalog/9780596527747/chapter/ch02.pdf

10 PRINT “Si is Cool”
20 GOTO 10

Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool
Si is Cool

case sensitivity….. I’m discovering that at the moment with Perl.. grrrrr

Sorry, typo there (getElementById)!

Oh yeah, it also can be pretty horrific. Best to write any JS code in a clear, easy to understand manner internally, and use some form of JS compresser for your production code.

I have had to fix so much fxxxing JS written by idiots.

So how did the interview go, WCA? Well, I hope…