What is the shortest function for reading a cookie by name in JavaScript?

Question

What is the shortest, accurate, and cross-browser compatible method for reading a cookie in JavaScript?

Very often, while building stand-alone scri

Answer 1

How about this one?

function getCookie(k){var v=document.cookie.match('(^|;) ?'+k+'=([^;]*)(;|$)');return v?v[2]:null}

Counted 89 bytes without the function name.