Find the largest and smallest values in the array

When I saw this topic, my first reaction was to give a sort (), then apply reverse () and take out the first value. is the maximum value. Let me give you an example.
var a = [1,5,7,10,3,56];
Console.log (A.sort (). reverse () [0]); ==>[1, 10, 3, 5, 56, 7]
The result is not supposed to be 56? Well, this method is not suitable for it is compared with the number of the first position.

All of this requires the use of the prototype JS method.
Console.log (Math.max.apply (This,a)); ==>56

So Console.log (Math.min.apply (this,a)) is the least number in the array. ==>1

Find the largest and smallest values in the array