Getting the min and max value in JavaScript, but from a 2D array

Question

I know this gets asked again and again but hear me out - this question is slightly different.

I can get a max or min from a 1D array like this:

var          


        

Answer 1

You can map the array to the second values of the elements:

var arr = [[[1, 112.0],[2,5.12],[3,113.1],[4,33.6],[5,85.9],[6,219.9]]];
var values = arr[0].map(function(elt) { return elt[1]; });
var max = Math.max.apply(null, values);
var min = Math.min.apply(null, values);