编写此代码的更好方法是什么？jQuery的

Question

我有一个数组,我做了一些事情,但现在我试图在'页面'之间划分它(更像幻灯片).

我使用该.each()方法遍历它,调用这个冗长的代码来将信息放在正确的页面上(每页只有5个项目,至少现在至少).

有没有办法简化这段代码？

理想情况下它可以无限地继续下去:

if (index > 0 && index <= 5) {
    var page = $('#librarian-page-gallery-1');
} else if (index > 5 && index <= 10) {
    var page = $('#librarian-page-gallery-2');
} else if (index > 10 && index <= 15) {
    var page = $('#librarian-page-gallery-3');
} else if (index > 15 && index <= 20) {
    var page = $('#librarian-page-gallery-4');
} else if (index > 20 && index <= 25) {
    var page = $('#librarian-page-gallery-5');
} else if (index > 25 && index <= 30) {
    var page = $('#librarian-page-gallery-6');
} else if (index > 30 && index <= 35) {
    var page = $('#librarian-page-gallery-7');
} else if (index > 35 && index <= 40) {
    var page = $('#librarian-page-gallery-8');
} else if (index > 45 && index <= 50) {
    var page = $('#librarian-page-gallery-9');
}

Answer 1

例如 :

var page = $('#librarian-page-gallery-' + Math.ceil(index/5));

说明:

   index/5 builds a float number :
         1 -> 0.2
         4 -> 0.8
         5 -> 1
         6 -> 1.2

   and Math.ceil returns the nearest greater or equal integer :
         0.2 -> 1
         0.8 -> 1
         1   -> 1
         1.2 -> 2