A step by step script with delay between each action, demo : https://brospars.github.io/snippets/step-by-step

step-by-step.js

function nextStep(cb, ...args) {
	setTimeout(() => {
  	cb(...args)
  }, 1000)
}

function step1(foo){
  // some logic and pass result to next step
  var bar = foo * 2
	nextStep(step2, foo, bar)
}

function step2(foo, bar){
  // some logic and pass result to next step
  var foobar = (foo + bar) * 2
  nextStep(step3, foo, bar, foobar)
}

function step3(foo, bar, foobar){
  // some logic and pass result to next step
 console.log(foo + bar + foobar)
}

step1(2) // logs '18' after some time