magento中如何使用Prototype对form进行验证
web开发中，虽然 Javascript 不是你唯一的form验证方式，但使用它肯定会对站点的可用性和效率有帮助。
Magento 中的 Javascript 验证
默认情况下 Magento 使用form.js (js/varien/form.js) 来提供抽象形式的 Javascript 函数，我认为-此class的最有用的应用就是表单验证。form.js 的验证类是Prototype库的一部分。它通过检查input中class的名称的形式来工作，即验证器通过class名称对用户的输入进行有效性验证。
Custom Form Validation
添加 Javascript 验证自己的表单是非常简单的。
首先，您需要创建一个form对象 (form.js)
第二个参数重新定位光标位置。如果设置为 true，光标将自动移动input首位。设置为 false，则禁用此功能。
现在，您已创建了一个JS对象来表示您的窗体，然后需要将一些验证规则添加到您的input上。
Magento Javascript 验证类
这里列出一些常用的验证类，想了解更多信息请使用google或留言！
validate-select
Please select an option
required-entry
This is a required field
validate-number
Please enter a valid number in this field
validate-digits
Please use numbers only in this field. please avoid spaces or other characters such as dots or commas
validate-alpha
Please use letters only (a-z or A-Z) in this field.
validate-code
Please use only letters (a-z), numbers (0-9) or underscore(_) in this field, first character should be a letter.
validate-alphanum
Please use only letters (a-z or A-Z) or numbers (0-9) only in this field. No spaces or other characters are allowed
validate-street
Please use only letters (a-z or A-Z) or numbers (0-9) or spaces and # only in this field
validate-phoneStrict
Please enter a valid phone number. For example (123) 456-7890 or 123-456-7890
validate-phoneLax
Please enter a valid phone number. For example (123) 456-7890 or 123-456-7890
validate-fax
Please enter a valid fax number. For example (123) 456-7890 or 123-456-7890
validate-date
Please enter a valid date
validate-email
Please enter a valid email address. For example [email protected].
validate-emailSender
Please use only letters (a-z or A-Z), numbers (0-9) , underscore(_) or spaces in this field.
validate-password
Please enter 6 or more characters. Leading or trailing spaces will be ignored
validate-admin-password
Please enter 7 or more characters. Password should contain both numeric and alphabetic characters
validate-cpassword
Please make sure your passwords match
validate-url
Please enter a valid URL. http:// is required
validate-clean-url
Please enter a valid URL. For example http://www.example.com or www.example.com
validate-identifier
Please enter a valid Identifier. For example example-page, example-page.html or anotherlevel/example-page
validate-xml-identifier
Please enter a valid XML-identifier. For example something_1, block5, id-4
validate-ssn
Please enter a valid social security number. For example 123-45-6789
validate-zip
Please enter a valid zip code. For example 90602 or 90602-1234
validate-zip-international
Please enter a valid zip code
validate-date-au
Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006
validate-currency-dollar
Please enter a valid $ amount. For example $100.00
validate-one-required
Please select one of the above options.
validate-one-required-by-name
Please select one of the options.
validate-not-negative-number
Please enter a valid number in this field
validate-state
Please select State/Province
validate-new-password
Please enter 6 or more characters. Leading or trailing spaces will be ignored
validate-greater-than-zero
Please enter a number greater than 0 in this field
validate-zero-or-greater
Please enter a number 0 or greater in this field
validate-cc-number
Please enter a valid credit card number.
validate-cc-type
Credit card number doesn't match credit card type
validate-cc-type-select
Card type doesn't match credit card number
validate-cc-exp
Incorrect credit card expiration date
validate-cc-cvn
Please enter a valid credit card verification number.
validate-data
Please use only letters (a-z or A-Z), numbers (0-9) or underscore(_) in this field, first character should be a letter.
validate-css-length
Please input a valid CSS-length. For example 100px or 77pt or 20em or .5ex or 50%
validate-length
Maximum length exceeded
英文原文出处http://fishpig.co.uk/blog/magento-forms-prototype-javascript-validation.html