How do i map object in array

I want to map the object in the array and access it through the row and col fields

I have the following object array:

const arrayList = [
  {row: 0, col: 0, name:'Ankara'},
  {row: 0, col: 1, name:'Tokyo'},
  {row: 1, col: 0, name:'Munih'},
  {row: 1, col: 1, name:'Basel'},
]

I want to be able to access those elements with a nested array.

For example:

arrayMapList[0][0] = {row:0,col:0, name:'Ankara'}

Then I use:

arrayMapList[0][0]

The following should output:

{row:0,col:0, name:'Ankara'}

>Solution :

You need to make nested arrays.

const arrayList = [
  {row:0,col:0, name:'Ankara'},
  {row:0,col:1, name:'Tokyo'},
  {row:1,col:0, name:'Munih'},
  {row:1,col:1, name:'Basel'},
];

const arrayMapList = [];
arrayList.forEach(el => {
  if (!arrayMapList[el.row]) {
    arrayMapList[el.row] = [];
  }
  arrayMapList[el.row][el.col] = el;
});

console.log(arrayMapList[0][1]);