Basic JavaScript - Nesting For Loops, Var / Let making a diff?

Tell us what’s happening:
Describe your issue in detail here.

I was really close before looking the video, almost identical, but still dosn’t work, even tho is the same code of the video. I’m really puzzled, I notice that copying and pasting other codes with var instead of let works, but in the tutorial/explanation of the exercise uses let, please someone could explain me what’s happening?

Your code so far

function multiplyAll(arr) {
  let product = 1;
  // Only change code below this line
for(let i = 0; i < arr.lenght; i++){
  for(let j = 0; j < arr[i].length; j++){
    product *= arr[i][j];
  // Only change code above this line
  return product;

multiplyAll([[1, 2], [3, 4], [5, 6, 7]]);

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ Safari/537.36

Challenge: Basic JavaScript - Nesting For Loops

Link to the challenge:

I would avoid copying any answers. Reading code and writing code are two different skills.

This code isn’t working because you misspelled ‘length’

thank you! I need to improve my reading - writing

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