Facebook Messenger bot not sending messages in order

Question

I\'m playing around with building a simple Facebook Messenger chatbot and I\'m having trouble sending messages in sequence.

In the example above, it should

Answer 1

You can achieve QUEUING by promises.

function delay(time) {
  return new Promise(function(resolve, reject) {
    setTimeout(resolve, time);
  });
}

delay(2000).then(() => {
  console.log('hi');
  delay(2000).then(() => {
    console.log('hello');
    delay(2000).then(() => {
      console.log('welcome');
    })
  })
})