Help : ') Javascript

Question

var pos = 0;
//our box element
var box = document.getElementById("box");
var t = setInterval(move, 10);

function move() {
if(pos >= 150) {
clearInterval(t);
}
else {
pos += 1;
box.style.left = pos+"px";
}
}

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"(move, 10);"?
for what this '10' ? why 10 ?

Answer 1

You’re right

Answer 2

Ahhhh, so that is duration.... Thanks Toni :D

Answer 3

Actually, it moves 1px every 10ms. So:
10ms = 1px;
100ms = 10px;
1000ms (1 second) = 100px.
Safe to say since it is 150px, it will be 1500ms or 1.5 seconds.
This animation is 1.5 seconds in length.