max/min time get from array in es6 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 smallest number in array js

//Not using Math.min:
const min = function(numbers) {
  let smallestNum = numbers[0];
for(let i = 1; i < numbers.length; i++) {
    if(numbers[i] < smallestNum) {
      smallestNum = numbers[i];   
    }
  }
return smallestNum;
};