Getting the min and max value in JavaScript, but from a 2D array

Question

I know this gets asked again and again but hear me out - this question is slightly different.

I can get a max or min from a 1D array like this:

var          


        

Answer 1

var list = [
  [1, 112.0],
  [2, 5.12],
  [3, 113.1],
  [4, 33.6],
  [5, 85.9],
  [6, 219.9]
];

function getMinMax(list) {

  var min = +Infinity;
  var max = -Infinity;

  for (var i = 0; i < list.length; i++) {
    var touple = list[i];

    var val = touple[1];
    console.log(touple);
    console.log(val);

    min = Math.min(min, val);
    max = Math.max(max, val);
  }

  return {
    min: min,
    max: max
  };

}

console.log(getMinMax(list));

Answer 2

If you are saying it is 2D array then it should have one less []

var myArray = [[1, 112.0],[2,5.12],[3,113.1],[4,33.6],[5,85.9],[6,219.9]];
var w_max=+Infinity;
var w_min=-Infinity;

for(var i=0;i< myArray.length;i++){
    elementArray = myArray[i];
    if(w_max < Math.max.apply(Math, elementArray)){
        w_max = Math.max.apply(Math, elementArray);
    } 
    if (w_min > Math.min.apply(Math, elementArray)){
        w_min = Math.min.apply(Math, elementArray);
        }
}

Answer 3

The first answer is not correct!!!

let arr = [[1, 112.0],[2,5.12],[3,113.1],[4,33.6],[5,85.9],[6,219.9]];
let values = Array.concat.apply([],arr);
let max = Math.max(...values);
let min = Math.min(...values);
console.log(arr)
console.log(min)//1
console.log(max)//219.9
console.log(values)//[ 1, 112, 2, 5.12, 3, 113.1, 4, 33.6, 5, 85.9, 6, 219.9 ]