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JavaScript promises, mastering the asynchronous

Magus
136.1K views
01 What is asynchronous in JavaScript
02 Why do we need asynchronous?
03 Quick quiz
04 Some pratice
05 The challenges of the asynchronous
06 The Promise class
07 Your first code with promises
08 It's time to pratice with promises
09 More pratice with promises
10 Chaining the promises
11 Traps of promises
12 The catch method
13 It's quiz time
14 How to join promises
15 A few tricks with promises
16 The last challenge
17 To go further
Previous: Quick quiz Next: The challenges of the asynchronous

The code snippet below is synchronous. It calls callback1 one time and callback2 three times. You must modify this code to make it asynchronous with the following rules:

  • callback1 must be called only one time, after 2 seconds.
  • callback2 must be called three times with an interval of 1 second.
Change the code to make it asynchronous
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function job(callback1, callback2) {
callback1();
callback2();
callback2();
callback2();
}
module.exports = job;
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