get highest value from array javascript

//For Values
var arr =[1,10,3]
var min = Math.min.apply(null, arr),
    max = Math.max.apply(null, arr);

//For Objects
var arr = [{a: 1},{a: 10},{a: 3}]
var values = arr.map(val => val.a);
var max = Math.max.apply(null, values);
console.log(max)
var arr = [1, 2, 3];
var max = arr.reduce(function(a, b) {
  return Math.max(a, b);
});function getMaxOfArray(numArray) {
    return Math.max.apply(null, numArray);
}