Is there an inbuilt way to use JQuery's .each() in reverse?

Question

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JQuery .each() backwards

What is the easiest way to use .each() in reverse? At the moment I am doing this:

var temp = [];

$("#nav a").each(function()
{
    temp.push($(this));
});

temp.reverse();
for(var i = 0; i < temp.length; i++)
{
    var a = temp[i];

    // Work with a.
}

It would be nice if I could do something like:

$("#nav a").reverse().each(function()
{
    // Work with $(this).

});

The context is that I have a collection of elements using float: right which displays them in reverse order and I want to iterate over them from left to right like normal.

http://stackoverflow.com/questions/1394020/jquery-each-backwards — Jon Friskics, Apr 03 '12 at 23:56
@JonFriskics That'll work, thanks - voting to close my question :) — Marty, Apr 03 '12 at 23:57
Great question to which I believe the answer is "no". Some genius needs to do a small add-on package to jQuery to supply all the obvious functional programming primitives ... if there is one already somebody plz call me a dolt and name it :-) — Pointy, Apr 03 '12 at 23:57
[underscore.js](http://documentcloud.github.com/underscore/) ? — keystorm, Apr 04 '12 at 00:04

score 7 · Accepted Answer · answered Apr 03 '12 at 23:59

7

Use this

$($("#nav a").get().reverse()).each(function() { 
     //..........
});

answered Apr 03 '12 at 23:59

Starx

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score 0 · Answer 2 · answered Apr 03 '12 at 23:59

I can't take credit for this because I saw it somewhere else here on SO but I think this should help; add the functionality to jQuery's prototype like so:

$.fn.reverse = [].reverse

Then use it as indicated above:

$('#nav a').reverse(); // returns a reversed array of elements

Hope this helps :)

Is there an inbuilt way to use JQuery's .each() in reverse?

2 Answers2