Query the maximum value in the array

Table of contents

I. Overview

Two, detailed explanation

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I. Overview

        Provides three methods for obtaining the maximum value of an array.

Two, detailed explanation

Method 1: sorting method

let arr = [4, 5, 6, 2, 3, 1];

arr.sort(function (a, b) {
  return a-b;
}); // [1, 2, 3, 4, 5, 6]

let min = arr[0];  // 1

let max = arr[arr.length - 1];  // 6

Method 2: Using Math.min and Math.max

var arr = [4, 5, 2, 1, 6];

var max = Math.max.apply(null, arr); // 6
var min = Math.min.apply(null, arr); // 1

var max = Math.max(4, 5, 2, 1, 6); // 6
var min = Math.min(4, 5, 2, 1, 6); // 1

Method 3: Use ES6's spread operator

var arr = [4, 5, 2, 1, 6];
 
var max = Math.max(...arr); // 6