javascript

CHAPTER 6 ■ FUNCTIONS AND ARRAYS
Now append an else clause that has sortByLosses() return -1 if the Pirates lost more games in e1
than e2, and 1 if the Pirates lost more games in e2 than e1:
var pirates = [[2010, 57, 105],
[2009, 62, 99],
[2008, 67, 95],
[2007, 68, 94],
[2006, 67, 95],
[2005, 67, 95],
[2004, 72, 89],
[2003, 75, 87],
[2002, 72, 89],
[2001, 62, 100],
[2000, 69, 93],
[1999, 78, 83],
[1998, 69, 93],
[1997, 79, 83],
[1996, 73, 89],
[1995, 58, 86],
[1994, 53, 61],
[1993, 75, 87]];
var sortByLosses = function (e1, e2) {
if (e1[2] === e2[2]) {
return e1[0] > e2[0] ? -1 : 1;
} else {
return e1[2] > e2[2] ? -1 : 1;
}
};
OK, time to see if sortByLosses() does what we want it to. So invoke sort() on pirates and pass the
sortByLosses identifier—don’t invoke sortByLosses with the () operator or you'll come to grief. sort()
will then reorder and return pirates. So if we invoke console.dir() on the return value of sort(),
JavaScript will print the reordered array in Firebug as Figure 6–33 displays.
var pirates = [[2010, 57, 105],
[2009, 62, 99],
[2008, 67, 95],
[2007, 68, 94],
[2006, 67, 95],
[2005, 67, 95],
[2004, 72, 89],
[2003, 75, 87],
[2002, 72, 89],
[2001, 62, 100],
[2000, 69, 93],
[1999, 78, 83],
[1998, 69, 93],
[1997, 79, 83],
[1996, 73, 89],
[1995, 58, 86],
[1994, 53, 61],
[1993, 75, 87]];
var sortByLosses = function (e1, e2) {
if (e1[2] === e2[2]) {
return e1[0] > e2[0] ? -1 : 1;
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