Calculate the Max/Min value from an array
The built-in functions Math.max() and Math.min() find the maximum and minimum value of the arguments, respectively.
Math.max(1, 2, 3, 4); // 4
Math.min(1, 2, 3, 4); // 1
These functions will not work as-is with arrays of numbers. However, there are some ways around this.
Function.prototype.apply()
allows you to call a function with a given this
value and an array of arguments.
var numbers = [1, 2, 3, 4];
Math.max.apply(null, numbers) // 4
Math.min.apply(null, numbers) // 1
Passing the numbers
array as the second argument of apply()
results in the function being called with all values in the array as parameters.
A simpler, ES2015 way of accomplishing this is with the new spread operator.
var numbers = [1, 2, 3, 4];
Math.max(...numbers) // 4
Math.min(...numbers) // 1
This operator causes the values in the array to be expanded, or “spread”, into the function’s arguments.

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