ref: https://github.com/digitalBush/jquery.maskedinput

First, include the jQuery and masked input javascript files.

<script src="jquery.js" type="text/javascript"></script> <script src="jquery.maskedinput.js" type="text/javascript"></script>

Next, call the mask function for those items you wish to have masked.

jQuery(function($){ $("#date").mask("99/99/9999"); $("#phone").mask("(999) 999-9999"); $("#tin").mask("99-9999999"); $("#ssn").mask("999-99-9999"); });

Optionally, if you are not satisfied with the underscore ('_') character as a placeholder, you may pass an optional argument to the maskedinput method.

jQuery(function($){ $("#product").mask("99/99/9999",{placeholder:" "}); });

Optionally, if you would like to execute a function once the mask has been completed, you can specify that function as an optional argument to the maskedinput method.

jQuery(function($){ $("#product").mask("99/99/9999",{completed:function(){alert("You typed the following: "+this.val());}}); });

Optionally, if you would like to disable the automatic discarding of the uncomplete input, you may pass an optional argument to the maskedinput method

jQuery(function($){ $("#product").mask("99/99/9999",{autoclear: false}); });

You can now supply your own mask definitions.

jQuery(function($){ $.mask.definitions['~']='[+-]'; $("#eyescript").mask("~9.99 ~9.99 999"); });

You can have part of your mask be optional. Anything listed after '?' within the mask is considered optional user input. The common example for this is phone number + optional extension.

jQuery(function($){ $("#phone").mask("(999) 999-9999? x99999"); });

If your requirements aren't met by the predefined placeholders, you can always add your own. For example, maybe you need a mask to only allow hexadecimal characters. You can add your own definition for a placeholder, say 'h', like so: $.mask.definitions['h'] = "[A-Fa-f0-9]"; Then you can use that to mask for something like css colors in hex with a mask "#hhhhhh".

jQuery(function($){ $("#phone").mask("#hhhhhh"); });