Just for Looping Through Multidimensional Array to iterate each item in javascript

JavaScript
1

this problem how can i solve with for loop not use a built-in function

let array = [

    [1,2,3],

    [4,5,6],

    [7,8,9],

    [[10,11,12],13,14],

    [[15,16,16],[17,18,[19,20]]]

]
2

Something like this using recursion.

function flatForEach(arg, f) {
  if (!Array.isArray(arg)) {
    return f(arg);
  }
  for (const element of arg) {
    flatForEach(element, f);
  }
}

flatForEach(array, console.log);
1 Like
3

i need to just for loop way not any recursive or built-in function
is it possible

4

No it’s not possible without recursion unless you can guarantee how many dimensions there are.

5

Here’s one that works for four dimensions or less. It’s ugly and I don’t support anyone using it.

function fourDimensionalForEach(array, f) {
  for (const first of array) {
    if (Array.isArray(first)) {
      for (const second of first) {
        if (Array.isArray(second)) {
          for (const third of second) {
            if (Array.isArray(third)) {
              for (const fourth of third) {
                f(fourth);
              }
            } else {
              f(third);
            }
          }
        } else {
          f(second);
        }
      }
    } else {
      f(first);
    }
  }
}

fourDimensionalForEach(array, console.log);
6

thank for details explain to me