Does the browser keep track of active timer IDs?

Question

Does the browser keep track of active setInterval and setTimeout IDs? Or is this solely up to the developer to keep track of?

If it does keep t

Answer 1

Look at the scripts below, the browser could remember the id of each setTimeout iteration

for (i = 1; i <= d; i++) {
          (function(j) {
                var delay = j/d; 
               t[j] = setTimeout(function() {      
                      elem.style.top = j+"px";
                     },delay);

            })(i);           
 } 

You can access them by

for (i in t) {
      alert(t[i]);  
 }