官方网站：http://bassistance.de/jquery-plugins/jquery-plugin-validation/

修复了一些bug，并增加了一些特性，更加好用了

1.5
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* Improved basic demo, validating confirm-password field after password changed
* Fixed basic validation to pass the untrimmed input value as the first parameter to validation methods, changed required accordingly; breaks existing custom method that rely on the trimming
* Added norwegian (no), italian (it), hungarian (hu) and romanian (ro) localization
* Fixed #3195: Two flaws in swedish localization
* Fixed #3503: Extended rules("add") to accept messages propery: use to specify add custom messages to an element via rules("add", { messages: { required: "Required! " } });
* Fixed #3356: Regression from #2908 when using meta-option
* Fixed #3370: Added ignoreTitle option, set to skip reading messages from the title attribute, helps to avoid issues with Google Toolbar; default is false for compability
* Fixed #3516: Trigger invalid-form event even when remote validation is involved
* Added invalidHandler option as a shortcut to bind("invalid-form", function() {})
* Fixed Safari issue for loading indicator in ajaxSubmit-integration-demo (append to body first, then hide)
* Added test for creditcard validation and improved default message
* Enhanced remote validation, accepting options to passthrough to $.ajax as paramter (either url string or options, including url property plus everything else that $.ajax supports)