How do you handle multiple instances of setTimeout()?

Question

What is the most recommended/best way to stop multiple instances of a setTimeout function from being created (in javascript)?

An example (psuedo code):

Answer 1

var timeout1 = window.setTimeout('doSomething();', 1000);
var timeout2 = window.setTimeout('doSomething();', 1000);
var timeout3 = window.setTimeout('doSomething();', 1000);

// to cancel:
window.clearTimeout(timeout1);
window.clearTimeout(timeout2);
window.clearTimeout(timeout3);

Answer 2

You could store multiple flags in a lookup-table (hash) using objID as a key.

var moving = {};

function mouseClick()
{
  var objID = "div_0001";
  if (!moving[objID])
  {
    moving[objID] = true;
    moveDiv("div_0001", mouseX, mouseY);
  }
}

Answer 3

I would do it this way:

// declare an array for all the timeOuts
var timeOuts = new Array();  

// then instead of a normal timeOut call do this
timeOuts["uniqueId"] = setTimeout('whateverYouDo("fooValue")', 1000);  

// to clear them all, just call this
function clearTimeouts() {  
  for (key in timeOuts) {  
    clearTimeout(timeOuts[key]);  
  }  
}  

// clear just one of the timeOuts this way
clearTimeout(timeOuts["uniqueId"]);