How do you find the maximum number of an array code example

Example 1: Find the maximum number of an array js

var arr = [1, 2, 3];
var max = arr.reduce(function(a, b) {
  return Math.max(a, b);
});

Example 2: Find the maximum number of an array js

function getMaxOfArray(numArray) {
    return Math.max.apply(null, numArray);
}