WML - ontimer Event
The ontimer event is used to trigger an event after a given time period. Let's say you want to display a message after 5 seconds of loading a card, then you can use this event to do so.
Here is the syntax to define an event handler for ontimer event:
<onevent type="ontimer"> A task to be performed. </onevent> <timer value="50"/>
Here, it means that a task will be performed after 5 seconds.
Following is the example showing usage of ontimer event along with <onevent> element.
<?xml version="1.0"?> <!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.2//EN" "http://www.wapforum.org/DTD/wml12.dtd"> <wml> <card id="splash" title="splash"> <onevent type="ontimer"> <go href="#welcome"/> </onevent> <timer value="50"/> <p> <a href="#welcome">Enter</a> </p> </card> <card id="welcome" title="Welcome"> <p> Welcome to the main screen. </p> </card> </wml>
When you load this program, it shows you the following screen:
If you do not select given Enter option, then after 5 seconds you will be directed to Welcome page and following screen will be displayed automatically.