A responsive datepicker built on top of Pikaday. It shows the native datepicker on mobile devices and a nice JS-picker on desktop. It is realised as a jQuery-Plugin.
More Infos & Download on GitHub
You can specify an output format as a Moment.js string. E.g. "X" (UNIX timestamp):
You can also specifiy the display format as you wish. E.g. "Do MMM YYYY". You can use the dateObject to implement clear/today buttons.
By using labels, you can trigger date pickers from different places on your page.