EDIT: This is just a simple example to demontrate the concern I have with a much larger program. I wouldn't use this actual code for anything :)
If I run this -
<!DOCTYPE html>
<html>
<head>
<script>
function update(amount, win, data)
{
win.innerText = 'Count is ' + amount;
setTimeout(function() { update(amount + 1, win, {data: 'something'})}, 1000);
}
window.onload = function() {
var win = document.getElementById('item');
update(0, win, 0);
}
</script>
</head>
<body>
<div id="item"></div>
</body>
</html>
The call to setTimeout presumably creates a closure which captures the contents of the parameters to the "update" function (amount, win, data). So those variables are maintained in memory until the timeout is called and returns so that they will be available inside that function call...
But that function creates a new closure for the next iteration of the timeout... What will be captured in that second closure? Is it just the new copies of those variables or will the ones that formed part of the function call be captured again in the new closure?
Basically will this eventually run out of memory due to the data in each closure getting bigger and bigger, or is this safe and reasonable?
