Question

for (var i=list.length; i>=0; i--){
    //do something....                      
}

I want to use a setInterval to make this process take 1 whole min no matter how many items are in the list. So if there are 10 items it would trigger every 6sec, 30items, every two seconds, etc.

Thanks for any help!

Answer 1

Something like this could be done:

var list = [1,2,3,4,5,6,7,8,9,10];
var timeFrame = 60000;
var interval = timeFrame / (list.length-1);
var i = 0;

(function iterate () {
    if (list.length > i) {
        console.log(list[i]);
        i++;
    }
    setTimeout(iterate, interval);
})();

JsFiddle Demo

I am not sure if this is what you’re looking for, but this will “iterate” through all items in the list, without using for loop, in the given timeframe. The function will always “call itself” using setTimeout. The timeout is calculated in the beginning based on the number of items.

This solution is much more “trustable” than setInterval. The next timeout will be set when the previous action is already done, so it won’t stack up.