Find and get only number in string

Question

Please help me solve this strange situation:

Here is code:

The link is so - www.blablabla.ru#3

The regex is so:

var id = window.location.href.replace(/\D/, '' );
alert(id);

The regular expression is correct - it must show only numbers ... but it's not showing numbers :-(

Can you please advice me and provide some informations on how to get only numbers in the string ?

Thanks

Answer 1

You're replacing only the first non-digit character with empty string. Try using:

var id = window.location.href.replace(/\D+/g, '' ); alert(id);

(Notice the "global" flag at the end of regex).

Answer 2

Consider using location.hash - this holds just the hashtag on the end of the url: "#42".
You can write:

var id = location.hash.substring(1);