JavaScript is playing very important role in modern web designing. Its sliding animation and fading effects enhance the look and feel of a website. The reason behind the popularity of JavaScript is because of its open source ready-to-use plug-ins.

There are two famous JavaScript frameworks: jQuery and MooTools. In the present age, a Web Designer can enhance a website design by using these plug-ins instead of writing custom JavaScript codes. Advance web designing techniques make use of these plug-ins to enhance the experience of a user and dynamic functionality of a website. Some plug-ins may help you in this mission: JavaScript LightBox jQuery, ThickBox jQuery, jQuery jCarousel, jQuery Coda Slider, jQuery Tabs and JSValidate.

This JavaScript timer countdown displays a Javascript countdown timer and alerts the user when the timer reaches zero. This countdown timer then redirects to another Web page. Particularly useful if you are writing an online test.

If you have a new window open up on your home page, it opens every time your visitors come back to that page. This is rude as well as very annoying thing to force onto your visitors. But, using cookies, this JavaScript can determine if the visitor has been here before, and only open a new window on their first visit to the page. The next time they come back, the script will read the cookie, identify them as a repeat visitor, and NOT open the window again. Neat!

This JavaScript code is a simple cross browser snake game you can add to your site on anywhere. Choose a level then use your arrow keys to attempt to eat the apple (red block), but watch out for the walls. At any time you can pause the game by pressing the space bar.

You still play more our different snake games at here.

Your visitors are from over the world? And you worry that they do know the best time to contact you? Let use this JavaScript code, may associate with some GMT zone script, to show your current timezone and your visitors what time that would be in their time zone.

This is joke error message and user can't click No button.

Ohm's Law calculator for electronics enthusiasts. Calculates Voltage, Current, Resistance, and Power.

This JavaScript can create a contacter to rate, rank, contact... a website.

This is another script that requires both a login and password to gain entry to the protected page, with an incorrect set taking the user to a 'failure' page instead.

Keep your visitors from submitting their form until their 'password' and 're-enter password' fields match, for verification purposes. They get an error message telling them to re-enter the passwords if they do not match.