jquery and pathname ... again ! ;-) - substring

Question

I'm trying the slug of my url at the end.
If url is one of the followings, I want to get "link1" only (no quotes).
http://www.site.com/link1
http://www.site.com/category/link1
http://www.site.com/myblog/category/link1
This is what I have but only the 2 firsts work.
$(".ajaxed").live("click", function(event) {
var post_slug = $(this)[0].pathname.substring($(this)[0].pathname.lastIndexOf("/")).replace(/^\//, "");
alert(post_slug);
$.address.crawlable(true).value(post_slug);
$(this).load("ajax/",{slug:post_slug}, function(){
});
return false;
});
Can I get help with the syntax please? Many thanks for your time and help.

Answer 1

Why can't you just split the string and return the very end?
var post_slug_array = $(this)[0].pathname.split('/');
var post_slug = post_slug_array[post_slug_array.length - 1];

Answer 2

I've try run:
t = "http://www.site.com/myblog/category/link1";
t.substring(t.lastIndexOf("/")).replace(/^\//,"");
console.log(t);
and I got link1. It's right, isn't it? so what's the problem on earth?

Answer 3

Not sure exactly what you are after, but trim the trailing slash. How do you want to handle querystrings? Your current code includes them.
http://jsfiddle.net/ppyJr/1/
//test cases
var paths = new Array(
'http://www.site.com/link1',
'http://www.site.com/myblog/category/link1',
'http://www.site.com/myblog/category/link1?querystring',
'http://www.site.com/myblog/category/link1/',
'http://www.site.com/myblog/category/link1/?querystring'
);
for (var i = 0; i < paths.length; i++) {
//trim trailing slash
var x = paths[i].replace(/\/$/, "");
//get trailing item
var post_slug = x.substring(x.lastIndexOf("/") + 1, x.length);
alert(post_slug);
}