Clear all setIntervals

This worked for me:

// clear interval
var id = window.setInterval(function() {}, 0);
while (id--) {
window.clearInterval(id);

When you set an interval, you get a pointer to it:

var myInterval = setInterval(function(){}, 4000);

If you want to cancel an interval, you do the following:

clearInterval(myInterval); 

So, for what you want to do, you would do the following:

var intervals = [];
$(".elements").each(function() {
    var i = setInterval(function() {

    }, 1000);
    intervals.push(i);
});

Then if you need to cancel them all you can do this:

intervals.forEach(clearInterval);

That should do it for you.

There's no "clear-all-intervals" function.

You'll need to store all of them, and clear all of them:

var ints = [];

$(".elements").each(function() {
  ints.push( setInterval(function() {

             }, 1000) 
  );
});

// later

for ( var i = 0; i < ints.length; ++i )
  clearInterval( ints[i] );

ints = [];   // and forget them