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This example demonstrates how the applet is able to interact with JavaScript
functions within the current page. In the graph below clicking on the Bar Segments or Product names within the legend will execute
a JavaScript function which will either show or hide a table of data for that data series.
and here is the HTML code for the applet
(note that 'mayscript' has been added to the APPLET tag ),
<applet code="SVbarchartApplet.class" archive="SVbarchart.jar"
width="400" height="400" mayscript>
<!-- Start Up Parameters -->
<PARAM name="LOADINGMESSAGE" value="Creating Chart - Please Wait."> <!-- Message to be displayed
on Startup -->
<PARAM name="STEXTCOLOR" value="0,0,100"> <!-- Message Text Color-->
<PARAM name="STARTUPCOLOR" value="255,255,255"> <!-- Applet Background color -->
<!-- Data files -->
<PARAM name="chartproperties" value="barpropsjs.txt">
<PARAM name="chartdata" value="bardatajs.txt">
</applet>
The configuration parameters are taken from the text file barpropsjs.txt
( click here to view )
and the graph data is read from the text file bardatajs.txt ( click here to view )
If you "right click" and view source of this page you
will see that we have the following JavaScript function within the page which is able to act upon the three tables, "c1",
"c2" and "c3".
<SCRIPT LANGUAGE="javascript">
var table='c1';
function combo(table) {
if (table=='c1') {
if (document.all.c1.style.visibility=="hidden") {
document.all.c1.style.visibility="visible";
}
else {document.all.c1.style.visibility="hidden";}
}
if (table=='c2') {
if (document.all.c2.style.visibility=="hidden") {
document.all.c2.style.visibility="visible";
}
else {document.all.c2.style.visibility="hidden";}
}
if (table=='c3') {
if (document.all.c3.style.visibility=="hidden") {
document.all.c3.style.visibility="visible";
}
else {document.all.c3.style.visibility="hidden";}
}
}
</script>
In the bardatajs.txt ( click here to
view ) file you will see that each of our data elements has the word "javascript" entered in the target field and
the JavaScript function name with the relevant value entered in the URL field.
For a full explanation of and range of values for the above parameters please
see the Documentation - Configuration Options».
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