求数组中的最大值最小值

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Math.max

Math.max(true, 0) // 1
Math.max(true, '2', null) // 2
Math.max(1, undefined) // NaN
Math.max(1, {}) // NaN

原始方法

var arr = [6, 4, 1, 8, 2, 11, 23];

var result = arr[0];
for (var i = 1; i < arr.length; i++) {
    result =  Math.max(result, arr[i]);
}
console.log(result);

reduce

var arr = [6, 4, 1, 8, 2, 11, 23];

function max(prev, next) {
    return Math.max(prev, next);
}
console.log(arr.reduce(max));

排序

var arr = [6, 4, 1, 8, 2, 11, 23];

arr.sort(function(a,b){return a - b;});
console.log(arr[arr.length - 1])

eval

var arr = [6, 4, 1, 8, 2, 11, 23];

var max = eval("Math.max(" + arr + ")");
console.log(max)

apply

var arr = [6, 4, 1, 8, 2, 11, 23];
console.log(Math.max.apply(null, arr))

ES6 ...

var arr = [6, 4, 1, 8, 2, 11, 23];
console.log(Math.max(...arr))

 

来源：oschina

链接：https://my.oschina.net/u/2285087/blog/3154793