(1)数值排序|升序[???]constarr=[40,100,1,5,25,10];arr.sort(函数(a,b){返回a-b;});before:[40,100,After1,5,25,10]:[1,5,10,25,40,100](2)数值排序|降序[???]constarr=[40,100,1,5,25,10];arr.sort(函数(a,b){返回b-a;});之前：[40,100,1,5,25,10]之后：[100,40,25,10,5,1](3)按字母排序|升序?[???]constarr=["Blue","Orange","Aqua","Marine"];arr.sort()之前：["Blue","Orange","Aqua","Marine"]之后：['Aqua','Blue','Marine','Orange'](4)按字母顺序排序|降序?[???]constarr=["Blue","Orange","Aqua","Marine"];arr.sort().reverse();之前：["Blue","Orange","Aqua","Marine"]之后：['Orange','Marine','Blue','Aqua'](5)日期排序|升序[▲]constarr=["2015-03-25","2015-02-01","2015-01-03","2015-02-02"];到。sort(函数(a,b){返回新日期(a)-新日期(b);});之前：[“2015-03-25”，“2015-02-01”，“2015-01-03”，“2015-02-02”]之后：[“2015-01-03”，“2015-02”–01","2015–02–02","2015–03–25"](6)日期排序|降序[▼]constarr=["2015-03-25","2015-02-01","2015-01-03","2015-02-02"];arr.sort(function(a,b){返回新日期(b)-新日期(a);});之前：[“2015-03-25”，“2015-02-01”，“2015-01-03”，“2015-02-02”之后]：[“2015-03-25”，“2015-02”–02","2015–02–01","2015–01–03"]
