wait for function done (with setInterval) and run next function

Question

how to run next function after first done with setInterval?

for example:

step1();
step2();

setInterval(step1, 1000).done(function() { 
    setInterval(step2, 1000).done( /* next step */);
});

please help me with solution!

Answer 1

Edit: This is an old answer. Now you can achieve this using promises also but the code will be slightly different.

If you don't want to use a promise you can use a simple flag to achieve such a thing. Please see example below:

var flag = true;

function step1() {
  console.log('title');
}

function step2() {
  console.log('subtitle');
}

function wrapper() {
  if(flag) {
    step1();
  } else {
    step2();
  }
  flag = !flag;
}

setInterval(wrapper, 30000);