How to script an Interval in Photoshop - photoshop

Question

I am trying to script something in Photoshop that has to run every X seconds. In JavaScript it would look like this:
function run() {
    alert('Ran!')
}
setInterval(run, 1000)
 
But in Photoshop's JavaScript, "setInterval is not a function". Any idea how else I would get any form of interval working?

Answer 1

This is by no means a good example, however, it stalls for a second. Those that don't know it there's no pause or sleep function in ECMA 3. I don't use a while loop as that's asking for trouble in Photoshop and may lock things up - which may lose your work.
sleepy(1000)
function sleepy(milliseconds)
{
// Start the fans please! I mean timer
var dStart = new Date().getTime();
var longtime = 10000000;
for(var i = 0 ; i < longtime; i++)
{
var now = new Date().getTime();
if (now > dStart + milliseconds)
{
// Stop the fans!
var dEnd = new Date().getTime();
var timeTaken = (dEnd - dStart)/1000;
var msgTime = (timeTaken + " seconds.");
alert(msgTime);
// alert("Ran");
return;
}
}
}
or if it's just a second, just calculate the Fibbonaci sequence to 28 spots. It's also machine dependant (and rather slower than expected in Photoshop)
function fibonacci(n)
{
if (n < 2)
return n
else
{
return fibonacci(n-1) + fibonacci(n-2);
}
}
var numOfNums = 28; // 0.91 seconds
// var numOfNums = 29; // 1.47 seconds
// var numOfNums = 30; // 2.39 seconds
// var numOfNums = 31; // 3.8 seconds
var dStart = new Date().getTime();
var msg = "";
for(var i = 0 ; i < numOfNums; i++)
{
msg += fibonacci(i) + ", ";
}
var dEnd = new Date().getTime();
var timeTaken = (dEnd - dStart)/1000;
// alert(msg);
alert(timeTaken);