arr.sort
//sort an array of strings
var fruitSalad = ['cherries', 'apples', 'bananas'];
fruit.sort(); // ['apples', 'bananas', 'cherries']
//sort an array of numbers
var scores = [1, 10, 2, 21];
scores.sort(); // [1, 10, 2, 21]
// Watch out that 10 comes before 2,
// because '10' comes before '2' in Unicode code point order.
//sorts an array of words
var randomThings = ['word', 'Word', '1 Word', '2 Words'];
randomThings.sort(); // ['1 Word', '2 Words', 'Word', 'word']
// In Unicode, numbers come before upper case letters,
// which come before lower case letters.