Js中的冒泡排序

var a = new Array(1, 3, 5, 7, 9, 2, 4, 6, 8)
for (var i = 0; i < a.length; i++) {
    for (var j = i + 1; j < a.length; j++) {
        if (a[i] > a[j]) {
            var n;
            n = a[j];
            a[j] = a[i];
            a[i] = n;
        }
    }
}