How can I create 2-dimension array using javasript for my case?

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Javascript

JavaSE6

Hi, I am trying to create a function for my array. It is going to take a parameter that i implement which is an array.

let dataStorage = [
       "08:30", "10:30", "Project", "Nicosia",
       "12:30", "14:30", "Selef", "Famagusta",
       "16:30", "18:30", "Deneme", "Kyrenia",
       "20:30", "22:30", "Sunum", "Laphitos"
   ];

Then,

let wordsPerLine = 4;

     let result = [[],[],[],[]];

     let len = dataStorage.length/4;

     let n = dataStorage.length / 4;

     for (let line = 0; line < n; line++) {
         for (let i = 0; i < wordsPerLine; i++) {
             const value = dataStorage[i + line * wordsPerLine]
             result[line].push(value)
         }

     }

If my argument length is greater than 4, an undefined error appears.
Error:

denene.html:36 Uncaught TypeError: Cannot read property 'push' of undefined

I have to increment empty arrays by hand. But I want to create it dynamically according to my length.



My b

, For example, : If my array length is 16, automatically empty array is going to be created in results[] array.

Expected Output:

[Array(4),Array(4),Array(4),Array(4)]
  ->0:(4) ["08:30", "10:30", "Project", "Nicosia"],
  ->1:(4) ["08:30", "10:30", "Project", "Nicosia"],
  ->2:(4) ["08:30", "10:30", "Project", "Nicosia"],
  ->3:(4) ["08:30", "10:30", "Project", "Nicosia"],

What I have tried:

let dataStorage = [
       "08:30", "10:30", "Project", "Nicosia",
       "12:30", "14:30", "Selef", "Famagusta",
       "16:30", "18:30", "Deneme", "Kyrenia",
       "20:30", "22:30", "Sunum", "Laphitos",
       "20:30", "22:30", "Sunum", "Laphitos",
       "20:30", "22:30", "Sunum", "Laphitos"
   ];


       console.log(dataStorage.length)
       //Ic array size
       let wordsPerLine = 4;

       let result = [[]];

       let len = dataStorage.length/4;

       let n = dataStorage.length / 4;

       for (let line = 0; line < n; line++) {
           for (let i = 0; i < wordsPerLine; i++) {
               const value = dataStorage[i + line * wordsPerLine]
               result[line].push(value)
           }

       }