JavaScript promises, mastering the asynchronous


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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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