Use:

var arr = [1, 2, 3, 4];

var largest = arr.reduce(function(x,y) {
    return (x > y) ? x : y;
});

console.log(largest);

最简单的语法，使用新的展开操作符:

var arr = [1, 2, 3];
var max = Math.max(...arr);

来源:Mozilla MDN

应该很简单:

var countArray = [1,2,3,4,5,1,3,51,35,1,357,2,34,1,3,5,6];

var highestCount = 0;
for(var i=0; i<=countArray.length; i++){    
    if(countArray[i]>=highestCount){
    highestCount = countArray[i]
  }
}

console.log("Highest Count is " + highestCount);

一个递归的方法如何使用三元运算符

const findMax = (arr, max, i) => arr。长度=== I ?马克斯: findMax(arr, arr[i] > max ?Arr [i]: max， ++i) Const arr = [5,34, 2,1,6,7,9,3]; const max = findMax(arr, arr[0]， 0) console.log (max);

我发现对于更大的数组(~100k个元素)，它实际上是用一个简单的for循环迭代数组，执行比Math.max.apply()好30%:

function mymax(a)
{
    var m = -Infinity, i = 0, n = a.length;

    for (; i != n; ++i) {
        if (a[i] > m) {
            m = a[i];
        }
    }

    return m;
}

基准测试结果

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/max

const inputArray = [1,3,4,9,16,2,20,18]; const maxNumber = Math.max(…inputArray); console.log (maxNumber);