Ext vtype

//form验证中vtype的默认支持类型
1.alpha //只能输入字母，无法输入其他（如数字，特殊符号等）
2.alphanum//只能输入字母和数字，无法输入其他
3.email//email验证，要求的格式是"[email protected]"
4.url//url格式验证，要求的格式是http://www.langsin.com

密码验证的例子：
Ext.apply(Ext.form.VTypes,{
    password:function(val,field){

       if(field.confirmTo){
  
           var pwd=Ext.get(field.confirmTo);
  
           return (val==pwd.getValue());
       }
       return true;
    }
});


items:[     {fieldLabel:"密码",
                id:"pass1",
                anchor:"90%"
               },
   {
                fieldLabel:"确认密码",
                id:"pass2",
                vtype:"password",
                vtypeText:"两次密码不一致！",
                confirmTo:"pass1",
                anchor:"90%"
               }




下面是API文档：
Properties  Methods  Events  Direct Link
Class Ext.form.VTypes
Package: Ext.form
Defined In: VTypes.js
Class: VTypes
Extends: Object
* This is a singleton object which contains a set of commonly used field validation functions. The validations provided are basic and intended to be easily customizable and extended. To add your own custom VType:

Ext.apply(Ext.form.VTypes, {
    IPAddress:  function(v) {
        return /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(v);
    },
    IPAddressText: 'Must be a numeric IP address'
});



This class is a singleton and cannot be created directly.
Public Properties
Property Defined By
  alphaMask : RegExp
The keystroke filter mask to be applied on alpha input
VTypes
  alphaText : String
The error text to display when the alpha validation function returns false
VTypes
  alphanumMask : RegExp
The keystroke filter mask to be applied on alphanumeric input
VTypes
  alphanumText : String
The error text to display when the alphanumeric validation function returns false
VTypes
  emailMask : RegExp
The keystroke filter mask to be applied on email input. See the email method for information about more complex ema...
The keystroke filter mask to be applied on email input. See the email method for information about more complex email validation.
VTypes
  emailText : String
The error text to display when the email validation function returns false
VTypes
  urlText : String
The error text to display when the url validation function returns false
VTypes
Public Methods
Method Defined By
  alpha( String value ) : void
The function used to validate alpha values
The function used to validate alpha values
Parameters:

    * value : String
      The value

Returns:

    * void

VTypes
  alphanum( String value ) : void
The function used to validate alphanumeric values
The function used to validate alphanumeric values
Parameters:

    * value : String
      The value

Returns:

    * void

VTypes
  email( String value ) : void
The function used to validate email addresses. Note that this is a very basic validation -- complete validation per ...
The function used to validate email addresses. Note that this is a very basic validation -- complete validation per the email RFC specifications is very complex and beyond the scope of this class, although this function can be overridden if a more comprehensive validation scheme is desired. See the validation section of the Wikipedia article on email addresses for additional information.
Parameters:

    * value : String
      The email address

Returns:

    * void

VTypes
  url( String value ) : void
The function used to validate URLs
The function used to validate URLs
Parameters:

    * value : String
      The URL

Returns:

    * void