I don't understand this for loop help!

JavaScript
1

Screenshot

I don’t understand what result represent for & what *=x is. Please explain these code.
Tq.

2

Please post actual code instead of a picture. Thanks

Try adding some console.log statements. What is the value of result on each loop iteration?

3 
function pow(x, n) {
  let result = 1;

  for (let i = 0; i < n; i++) {
    result *= x;
  }

  return result;
}
console.log(pow(2,3)); #result: 8
4

Did you try adding console.log statements to see what’s happening?

function pow(x, n) {
  let result = 1;
  console.log("start: result = " + result);

  for (let i = 0; i < n; i++) {
    result *= x;
    console.log("loop iteration " + i + ": result = " + result);
  }
 
  console.log("final: result = " + result);
  return result;
}
console.log(pow(2,3)); // result: 8
5

yes, how the result come with 2^3? How does it loop?

6

Have you used a for loop before?

7 
function pow(x, n) {
  let result = 1;
  console.log("start: result = " + result);

  for (let i = 0; i < n; i++) {
    result *= x;
    console.log("loop iteration " + i + ": result = " + result);
  }
 
  console.log("final: result = " + result);
  return result;
}
console.log(pow(2,3)); // result: 8

ok, so n is using as an index for *=x for loop.

8

n is how many times the loop occurs. i is the index

9

Thank you for your help :+1: :+1: :+1:

10

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