Question

This loop is in a function and it counts down from 10, however if I alert the parameter passed using i in the setV function it actually counts up!

for (var i=10;i>0;i--){
setTimeout('setV('+i+',"Out")',100);
}


function setV(c,t){
alert(c);
}

Answer 1

All the setV are programmed to execute at the same time (100ms after the instaneous loop execution), the order isn’t determined (see the spec).

You probably wanted

for (var i=10;i>0;i--){
   setTimeout('setV('+i+',"Out")',100*(11-i));
}