Actually, you don't need to perform any such conversion.
The string you have is already in very nearly an acceptable format for new Date(string)
and in fact even as is will be accepted by most (if not all) modern browsers.
To make it fully compliant with the ISO8601 variant that ES5 mandates, just replace the space between the date and time with a literal T
character, and add a time-zone specifier at the end (e.g. either Z
for UTC, or +01:00
, for example).
See http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.15 for more.