Picker.js is a JavaScript library for picking date and time.
The Picker.js has two modes: modal and inline. It can be used as a full date time picker and also can be used as a partial picker such as month picker. It is designed for mobile browsers, but also available for browsers in other devices.
Cropper.js is a JavaScript library for cropping image.
With the Cropper.js, you can select an specific area of an image, and then upload the coordinates data to server-side to crop the image, or crop the image on browser-side directly.