JS anomaly.

[Omirion]

function test(myTrig,t){
var num = arguments.length
if (num == 0){
	alert("preset stage");
	setTimeout(function(){test(1,1)},2);
} if (myTrig == 1){
	alert("starting first recursion");
	if (t==1.5 || t>1.5) {
		alert("exiting"); 
		return ;
	}
	alert(myTrig);
	alert(t);
	t += 0.1;
	setTimeout(function(){test(1,t)},2);
} if (myTrig == 2){
	alert(myTrig);
}
}

 

When this function is run clean like so

test();

 

It passes trough a preset stage and then is passed on to the first recursive part of the code.

 if (myTrig == 1){
	alert("starting first recursion");
	if (t==1.5 || t>1.5) {
		alert("exiting"); 
		return ;
	}
	alert(myTrig);
	alert(t);
	t += 0.1;
	setTimeout(function(){test(1,t)},2);

 

Each time var t is incremented by 0.1.

But not exactly, a 0.000000001 value is also added.

 

 

Any JS magician care to explain?

[Adam]

http://www.builderau.com.au/program/javascript/soa/Why-I-Love-ECMAScript-4-Real-Decimals/0,339028434,339289678,00.htm

[Omirion]

An interesting read

thanks.