Java/JavaScript/NeoWebScript Counter Demo

JavaScript / Java / NeoWebScript / GD
"start-able / stop-able" Animation Demo
(for Netscape 4.03 or later)

This is just a little demo that illustrates the combined use of JAVA, JavaScript , NeoWebScript and GD to produce a "start-able / stop-able" animated display of the current load on the webserver.

Such an effect could, of course, be accomplished with Java only - but the point here is to show the integration of the various tools...not the capabilities of Java {;-)

Here's how it works...

When you place your cursor in the vicinity of the gauge above, a javascript sees a MouseOver event which calls a public method of an invisible applet on this page.
The applet, in turn, opens and reads a URL which is an nph file containing only a NeoWebScript that returns (to the applet) the current Estimated Hits per Hour for the webserver.
The applet then returns the value to the javascript which passes it to a NeoWebScript/GD script that produces a new image of the gauge.
Finally, the javascript replaces the old gauge with the new gauge image and restarts the timer.
When you move your cursor OFF the image, the javascript timer is simply stopped.

sources for:

the Applet
the HTML & JavaScript
the nph/NeoWebScript
Note: Though this demo uses a nph/NeoWebScript to retrieve the values to be displayed, you could as easily use any cgi that returns an integer value as a string.

some other of my GD demos:

A Chart Example with an attached imagemap
A Chart Example where you pick the number of days to show
A Gauge Example
Customizable Icons lets you specify certain colors
Available Fonts
A Weak Blur (pretty slow)

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Modified - 06/21/02 - 20176197 - 4972447