The past few years have seen the rise and maturation of several full-blown in-browser code editors: CodeMirror, ACE (Cloud9), and Orion. No longer must we mortify users with huge, clunky text areas when they need to edit some CSS or script. This talk will go over the current state of JavaScript-based editors, and describe the implementation of CodeMirror in some depth.

Author of Eloquent JavaScript and main developer of CodeMirror.