What does the this javascript regular expression do?: “var match = self.location.href.replace(/\/$/i, '');”

Question

I saw this expression in another codebases library as part of the following sequence:

var url = sel.anchorNode.parentNode.href;
var match = self.location.href.replace(/\/$/i, '');
var replaced = url.replace(match,'');

It was suggest that the regular expression might strip of the trailing path to just reutrn the base URL but I created a fiddle to test that theory and it doesn't seem to check out.

http://jsfiddle.net/funkyeah/WEQZZ/

Answer 1

It only strips the trailing slash. A single slash /

Answer 2

正则表达式会删除斜杠（如果有的话），但是与最后一行（ replaced = ... ）结合使用时，将获得链接的URL和当前页面的URL（如果有斜杠，则将其删除） ）从其中删除。