what is the value of results for the makeCounter()

user_10610207 0
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What is the value of const result? my guess was (3, 1). This is confusing to me so any help would be appreciated.

    function makeCounter() {
      let count = 0;
      return function() {
        count += 1;
        return count;
      }
    }
    const counter1 = makeCounter();
    const counter2 = makeCounter();
    counter1();
    counter1();
    
    const c1 = counter1();
    const c2 = counter2();
    const result = [c1,c2];
    console.log(result)

javascript
1 Answers

Yes, [3, 1] is correct. (You can select 'run code snippit' to see it in action).

The reason here is that calling makeCounter() returns a function, with a local count variable initialized as zero.

Each time you call the the function returned by makeCounter() (i.e. counter1, or counter2), that counter's count is incremented.

counter1() is called 3 times, and counter2() is called once. And they are put together in an array at the end, thus [3, 1].

user_87429680
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