# JavaScript, 31 bytes (SAFE) ## Code '([(102)])prenatal.gecko'tonsil ## Output j Should work in any browser console, although it is a standalone program. ## Original source >! `alert('0acegnos'.link(top)[12])`<br /> >! The characters in the string are red herring, so it wouldn't be obvious what functions were used. It uses the little-known [link function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/link), which makes an HTML <a> element. The `top` object is converted to a string as `[object Window]`, and added as the <a> link, the twelfth character of which is j.