View source for Slow the turtle down

This is an example, where the turtle speed is controlled by the setTimeout() method
of JavaScript.
<html>
<form><input type="button" value="run" onclick="run(100)"></form>
</html>

<jsxgraph width="500" height="500">
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox: [-250, 250, 250, -250]});
var t = brd.create('turtle',[100,-50],{strokeOpacity:0.7,fillColor:'#ff8800',fillOpacity:0.2});
t.setPenSize(3);

function run(n) {
   if (n>0) {
     t.fd(20);
     t.lt(90*(1-n/100));
     var st = 'run(' + (n-1) + ')';
     setTimeout(st,25);
   }
}
</jsxgraph>

<source lang="javascript">
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox: [-250, 250, 250, -250]});
var t = brd.create('turtle',[100,-50],{strokeOpacity:0.7,fillColor:'#ff8800',fillOpacity:0.2});
t.setPenSize(3);

function run(n) {
   if (n>0) {
     t.fd(20);
     t.lt(90*(1-n/100));
     var st = 'run(' + (n-1) + ')';
     setTimeout(st,25);
   }
}
</source>

[[Category:Examples]]
[[Category:Turtle Graphics]]