Nested setTimeout alternative?

Question

I need to execute 3 functions in a 1 sec delay.

for simplicity those functions are :

console.log(\'1\');
console.log(\'2\');
console.log(\'3\');
         


        

Answer 1

You can use something like this with setTimeout:

var funcs = [func1, func2, func3],
    i = 0;

function callFuncs() {
    funcs[i++]();
    if (i < funcs.length) setTimeout(callFuncs, 1000);
}
setTimeout(callFuncs, 1000); //delay start 1 sec.

or start by just calling callFuncs() directly.

Update

An setInterval approach (be aware of the risk of call stacking):

var funcs = [func1, func2, func3],
    i = 0,
    timer = setInterval(callFuncs, 1000);

function callFuncs() {
    funcs[i++]();
    if (i === funcs.length) clearInterval(timer);
}