JavaScript - one of the programming languages in the client-side, an useful programming language for web development. The syntax of JavaScript look like Java but it's easier to learn. And this post is the first part in the series of JavaScript code examples, simple & easy to master.

Credit cards are becoming more popular in the online world, and the validation of credit card number is an issue that the online payment portals are concerning, but most of the solutions are done in the server-side, today jsB@nk would introduce to you a solution performed in JavaScript.

This solution can be done through Luhn algorithm (developed by Hans Peter Luhn) based on the original features of a credit card number. Please read the full post for the details of this solution.

One more JavaScript tutorial video for showing the basics of the JavaScript programming language, you are able to understand the syntax of JavaScript, the simple way to print out the text, the If/Else clause, the functions, ... from this video. The duration of this JavaScript video tutorial is 10 minutes, rather long to learn.

This JavaScript tutorial video shows the really basic things about the JavaScript programming language, mainly proper syntax of strings, method of script inclusion, and the commonly used alert() and document.write(). The song is Beethoven's Ninth Symphony.

View this JavaScript tutorial video to understand & learn how to use functions in the JavaScript programming language, such as: define, call, ...

You are needing a beautiful/stylish Javascript countdown timer? And it must be easy to use & edit? Check out this JavaScript code now to see it in action. It meets your requirements, and maybe the best JavaScript countdown timer you ever use.

AJAX is the great technique to load the content on your site, because AJAX requests are usually faster than regular page loads; unfortunately many web developers do not properly cache request information when they can. So this post show you how to cache AJAX requests in JavaScript, and the example in this post also uses the TwitterGitter plugin, please get it for your own examples.

Professional User Interface (UI) is the thing that all web designers want, but we have to do many things to get it; beside the attractive design/layout, we must implement many beautiful animations for the interaction of users.

With the power of JavaScript frameworks such jQuery, YUI, MooTools, ... installing the animations become more simple & faster. Let check the list of very creative JavaScript techniques in the full post for the professional UIs maybe I never thought that they would be.

Almost the web developers know that it takes a long time & high technologies to process the upload of file, if they only use the programming languages at server, such as PHP, CGI, .NET, ... And the work will be more complicated if we need to solve many files at one time.

But in the modern world of Web 2.0, the upload of many files is getting more popular; so this post shows you the solution for this problem: using Flash + JavaScript to allow users to select multiple files at one go.

In the great AJAX applications, we usually use external JavaScript frameworks to support our own handmade codes. But the problem of this solution is these famous JavaScript frameworks, they always give us the set of features that we won't need all. So, in the rich AJAX applications, the speed of site maybe slow if we don't optimize our JavaScript codes well. But via this free JavaScript tutorial, we can cut down this trouble. Please go to the full post for 7 JavaScript solutions you should try.