数组去重之简单,装逼方法
[...new Set([1, "1", 2, 1, 1, 3])]
取出一个数组中的最大值和最小值
var numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411];
var maxInNumbers = Math.max.apply(Math, numbers);
var minInNumbers = Math.min.apply(Math, numbers);