Using setTimeout to update progress bar when looping over multiple variables

Question

Suppose you have 3 arrays you want to loop over, with lengths x, y, and z, and for each loop, you want to update a progress bar. For example:

function run()         


        

Answer 1

If you want to use setTimeout you could capture the x, y, z and count variables into a closure:

function run() {
    var x = 100,
        y = 100,
        z = 10,
        count = 0;
    for (var i=0; i

Live demo.