Wireless Developer Network - WMLScript Tutorial

In the following example, we will build a simple WML card that asks the user to input a social security number (an identification number used by the U.S. Social Security Administration). We will then use WMLScript to verify that the user’s input was formatted correctly. Following this verification, we’ll alert the user via WMLScript to let them know whether their number was accepted or not. This example, though simple, represents a typical usage of WMLScript on a client.

http://www.wirelessdevnet.com/channels/wap/training/wmlscript3.html