Input masks are handy for better form handling and creating more user-friendly forms.
Masks for different input types can be created easily with the tools below.
iMask
iMask is an open source (free) javascript tool for creating input and textarea masking. It is built on Mootools, supports keyboard control and dynamic charset definition.
Masked Input Plugin for jQuery
This is a masked input plugin for the jQuery javascript library. It allows a user to more easily enter fixed width input where you would like them to enter the data in a certain format (dates,phone numbers, etc).
Password Field Image Mask
A nice JavaScript input mask which helps displaying the password field characters as images.
dFilter
A tiny JavaScript for input masking.
JavaScript Mask API
A simple yet nice input mask.
JavaScripTools
JavaScripTools is a set of JavaScript components, functions and classes which also includes a powerful input mask library.
Typecast – The Input Field Library
Typecast is an input field augmentation library. When complete it will add autocomplete, suggest and realtime character masking ability to the standard HTML input field.