JavaScript is a multi-purpose, cross-platform, client-side scripting language developed by Netscape. Its use along with HTML enables Web developers to create interactive pages. JavaScript code is small and fast. It can be read by most Web browsers and is often triggered by user actions such as form submits, mouse rollovers and other user actions.

Jason uses JavaScript for many various reasons. One of his common uses includes image rollovers, which can change an image when the mouse cursor is moved over it. He also uses JavaScript to validate forms before they get are sent back to the server. Jason uses these two examples in many of the sites he creates. He enjoys finding other ways to use the language when it seems fit.

JavaScript Examples

• Ultra Vitamins
  This is a mock site for a company named Ultra Vitamins. Jason created it as part of a project in class. Jason was able to use JavaScript in many different ways on this site. The date and the random product images on the home page are all part of a script that he wrote. JavaScript scores the online quiz and the form is checked for errors before it submits. The client-side error checking for the form is very primitive. Jason has since modified it to meet today's standards and still uses it today.
  
• The Pickle Factory
  This is another site that Jason created to test out some of his JavaScript knowledge. This is a small site but uses JavaScript in many ways. There is no use of links on the site; JavaScript buttons controls it all. The form on the bottom of the home page displays a window once you enter your name, and the status bar displays a message while you are at the site. The products page displays a close-up picture of the image and a small product description in a popup window. Jason using JavaScript created all of this.