JSFiddle - React, Tailwind, and code Playground

by Pradeep Shankar

HTML

<div id="result"></div>

JavaScript

data = [
  [1, 622, 782, 783, "2015-04-21"],
  [2, 622, 782, 783, "2015-04-21"],
  [3, 622, 782, 783, "2015-04-22"],
  [4, 622, 782, 783, "2015-04-23"],
  [5, 622, 782, 783, "2015-04-24"],
  [6, 622, 782, 783, "2015-04-28"],
  [7, 622, 782, 783, "2015-04-28"],
  [8, 622, 782, 783, "2015-04-29"],
  [9, 622, 782, 783, "2015-05-04"],
  [10, 622, 782, 783, "2015-05-05"]
]

var dates = data.map(function(x) { return new Date(x[4]); })

var maxDate=new Date(Math.max.apply(null,dates));
var minDate=new Date(Math.min.apply(null,dates));

$("#result").append("Min: " + minDate.toString() + "<br><br/>");
$("#result").append("Max: " + maxDate.toString() + "<br>");