Nesting for loops - multiplying

JavaScript
1

Tell us what’s happening:
hi guys, don’t understand what means the orders which I uploaded.

Screen Shot 2021-01-02 at 13.27.58
Screen Shot 2021-01-02 at 13.27.581180×458 35.1 KB

Your code so far


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

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

Your browser information:

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Challenge: Nesting For Loops

Link to the challenge:

2

can you rephrase in a different way? I don’t understand what you are asking

3

yes sure:
multiplyAll([[1],[2],[3]]) should return 6

multiplyAll([[1,2],[3,4],[5,6,7]]) should return 5040

multiplyAll([[5,1],[0.2, 4, 0.5],[3, 9]]) should return 54
don’t get what does it mean!

4

it is the function call with an example of arguments and the output that the function should have when called like that

1 Like
5

also note that this is not correct,
expanding tbr shorthand syntax this is
product = product = product * arr[i][j]

you can’t use both = and *=, you need or one or the other, not both

1 Like
6

thanks for mentioning this point.

7

I know but I don’t get how it works. could u please explain one of them?

8

maybe review this challenge

1 Like
9