JavaScript: Replace hexadecimal character

Question

I have a string such as "%2Fu%2F2069290%2F" in JavaScript (extracted from a web page). How do I get the human-readable version of that string?

Answer 1

Use the unescape() function, eg:

alert(unescape("%2Fu%2F2069290%2F"));

Answer 2

alert(decodeURIComponent("%2Fu%2F2069290%2F"));

Answer 3

with unescape() ?

Answer 4

Short version: Use decodeURIComponent().

Longer version: In older versions of JavaScript you could use unescape() but that has been deprecated since it only works properly for the LATIN1/ISO8859-1 codeset, so you really want to use decodeURIComponent() which is supported by all modern browsers.

 var c = decodeURIComponent("%2Fu%2F2069290%2F"));