Javascript nested array

JavaScript
1 
var arr = [
  [1,2], [3,4], [5,6]
];
for (var i=0; i < arr.length; i++) {
  for (var j=0; j < arr[i].length; j++) {
    console.log(arr[i][j]);
  }
}

make me understand this code plzzzzzzzzzzzz.

2

Maybe review these challenges

3

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