knockout.js and was totally blown away. It does a great job of removing the need for (most) DOM manipulations which lets you focus on your data model and get complex UIs running with a minimal amount of code. That said, those complex UIs are by default made up of simple widgets (input boxes, buttons, etc) and if you want more complex widgets (date pickers, inline editors, etc) you need to either find them elsewhere or roll your own. Ryan Niemeyer gives a great explanation of how to create a date picker (or any custom binding) and I quickly incorporated it into my own site. Since I also needed an inline editor I figured I would post my results so others could reuse and improve upon them. The following code is very much based on the Custom Bindings article referenced above and the Jeditable inline editor.