js的sort也可以进行字符排序

数组文字排序：sort（）：数字也用这个来排序


var arr = new Array(6)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
arr[3] = "James"
arr[4] = "Adrew"
arr[5] = "Martin"




document.write(arr.sort())


结果：
Adrew,George,James,John,Martin,Thomas