获取数组最大值和最小值的简便方法

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

//两个数组数组合并
var arr1 = [1, 2, 3];
var arr2 = [4, 5, 6];  
Array.prototype.push.apply(arr1, arr2);

http://blog.youkuaiyun.com/business122/article/details/8000676