How to understand this script?

• 0
  I started learning recursion, can you tell me how it works?
  I understand the first three steps, but I can't understand further.
  1.n = 5
  2.n! == 5
  3.return myFun (n - 1) + '' + n; // Output: 4 5. If the initial output is 4 5, how do the rest of the numbers get to 4 5?
  4. Further I don’t understand, the variable n doesn’t change, it seems like how other numbers are obtained then?
  

  function myFun(n) {
    if (n === 1) return 1;
  
    return myFun(n - 1) + ' ' + n;
  }
  
  myFun(5);
  
  // 1 2 3 4 5

  JavaScript Anonymous, Jul 28, 2020

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1 Answers
• 0
  Take a walk for a start.
  
  
  
  Recursion will start returning a result when it reaches the very end and results will start returning from the very end. Hence, it turns out that 5 was sent, but the output started from 1, because return did not work before, it called the myFun function, and the result began to return when this if if (n == = 1) return 1; , in which myFun is no longer called and, accordingly, the recursion ends and return begins to return a response.

  Evangeline Bruce

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