编写面向对象的 JavaScript 第二部分

类型

IsArray( arg )
        //Returns true if argument is an array; false otherwise.

            
    IsDefined( arg )
        //Returns true if argument is defined; false otherwise. 

            
    IsEmpty( obj )
        //Returns true if an object posses no properties; false otherwise.

            
    IsFunction( arg ) 
        //Returns true if argument is a function; false otherwise. 

            
    IsNull( obj ) 
        //Returns true if an object is a null; false otherwise. 


    IsObject( arg ) 
        //Returns true if argument is an object; false otherwise. 


    IsString( arg ) 
        //Returns true if argument is a string; false otherwise.

名称

FunctionName( func ) 
        //Returns the name of the function.


    ObjectName( obj ) 
        //Returns the name of the object.

转换

ToFunction( obj )
        //Converts an object to a function.

GetName( classArg )
 //Returns the class name from the class argument.


 IsDefined( thisClass )
 //Returns true class is defined; false otherwise.


 IsInitializing( thisClass )
 //Returns true if class in initializing; false otherwise.s

 //in initializing; false otherwise.


 InstanceOf( thisClass, targClass )
 //Determines if a class in an instance of target class


 New( thisClass [,baseClassArg1, baseClassArg2, ..., baseClassArgN] )
 //Defines a new class.

 //Copies prototypes and properties from base class(es) to new class.

方法

元素

FindElementById( elementName )
 //Returns DOM element matched by the element id attribute.


 FindElementByName( elementName )
 //Returns DOM element matched by the element name attribute.


 FindElementSetById( elementName )
 //Returns a collection of DOM elements matched by the element id attribute.


 FindElementSetByName( elementName )
 //Returns a collection of DOM elements matched by 

 //the element name attribute.


 GetElementById( elementId )
 //Returns the DOM element of the elementId.


 GetElementByName( elementName )
 //Returns DOM element of the elementName.


 GetElementTerms( argElement )
 GetElementTerms( argElement, splitChar )
 //Returns collection of element terms from the element id attribute.

表单

GetForm()
 GetForm( formIndex )
 GetForm( formId )
 //Returns document form.

图像

FindImage( imageName )
 //Returns DOM image matched by the element id attribute.


 FindImageSet( imageName )
 //Returns a collection of DOM images matched by the 

 //element id attribute.attribute.


 GetImage( imageName )
 //Returns a DOM image for the p; Returns a DOM image for 

 //the imageName id attribute.

提交

PostBack()
 PostBack( formIndex )
 PostBack( formIndex, eventTarget )
 PostBack( formIndex, eventTarget, eventArgument )
 PostBack( eventTarget )
 PostBack( eventTarget, eventArgument )
 //Submits form to server.

属性

浏览器

 isIE
 //Returns true if browser is IE; false otherwise.


 isNetscape
 //Returns true if browser is Netscape; false otherwise.


 isMozilla
 //Returns true if browser is Mozilla; false otherwise.

对象

所有 JavaScript 对象的根。

className
 //All objects inherit the className property.

 //The className property for Object class is "Object".


 baseClass
 //Base class property – a base class or array of base classes.

 //The baseClass property for Object class is null.


 InstanceOf( targetClass )
 //Returns true if this is an instance of targetClass; false otherwise.


 InitInstance()
 //Initializes class instance.; Initializes class instance.ance.;

 //Initializes class instance.

函数

函数的对象表示。

className
 //The className property for Function class is "Function".


 baseClass
 //The baseClass property for Function class is null.


 instances
 //The instances property informs class to keep track of class instances.


 Method
 Defines a new method on a function object.

Error（错误）

异常对象。

className
 //The className property for Error class is "Error".


 baseClass
 //The baseClass property for Error class is Object.

日期

日期和时间对象。

className
 //The className property for Date class is "Date".


 baseClass
 //The baseClass property for Date class is Object.

RegExp

正则表达式对象。

className
 //The className property for String class is "RegExp".


 baseClass
 //The baseClass property for String class is Object.

字符串

字符串对象。

className
 //The className property for String class is "String".


 baseClass
 //The baseClass property for String class is Object.


 trim()
 //Removes leading and trailing whitespaces from strings.

///////////////////////////////////////////////////////////////////////

 // Class definition.

 ///////////////////////////////////////////////////////////////////////

 if ( !Cfx.Class.IsDefined( Validator ) )
 {
 Cfx.Class.New( Validator );
 if ( Cfx.Class.IsInitializing( Validator ) )
 {
 Validator.Method( FieldName );
 Validator.Method( Element );
 Validator.Method( Value );
 Validator.Method( Enable );
 Validator.Method( IsEnabled );
 Validator.Method( SetFocus );

 // Define default properties.

 Validator.fieldName = null;
 Validator.element = null;
 return;
 }
 }

//////////////////////////////////////////////////////////////////////////

 // Setup class instance.

 /////////////////////////////////////////////////////////////////////////

 return this;

//////////////////////////////////////////////////////////////////////////

 // Methods definitions.

 //////////////////////////////////////////////////////////////////////////


 //////////////////////////////////////////////////////////////////////////

 // FieldName : fieldName accessor.

 //////////////////////////////////////////////////////////////////////////

 function FieldName()
 {
 // setter.

 if ( arguments.length )
 this.fieldName = arguments[0];

 // getter.

 return this.fieldName;
 }

 //////////////////////////////////////////////////////////////////////////

 // Element : element accessor.

 //////////////////////////////////////////////////////////////////////////

 function Element()
 {
 // setter.

 if ( arguments.length )
 this.element = arguments[0];

 // getter.

 return this.element;
 }

 //////////////////////////////////////////////////////////////////////////

 // Value : Value accessor.

 //////////////////////////////////////////////////////////////////////////

 function Value()
 {
 // setter.

 if ( arguments.length )
 this.element.value = arguments[0];

 // getter.

 return this.element.value;
 }

 //////////////////////////////////////////////////////////////////////////

 // IsEnabled : returns whether the Element is enabled or disabled.

 //////////////////////////////////////////////////////////////////////////

 function IsEnabled()
 {
 return !this.element.disabled;
 }

 //////////////////////////////////////////////////////////////////////////

 // Enable : enables or disables an element.

 //////////////////////////////////////////////////////////////////////////

 function Enable( state )
 {
 this.element.disabled = !state;
 }

 //////////////////////////////////////////////////////////////////////////

 // SetFocus : sets the text element focus.

 //////////////////////////////////////////////////////////////////////////

 function SetFocus()
 {
 if ( this.element != null )
 {
 if ( Cfx.Js.IsString( this.element.value ) )
 {
 this.element.focus();
 if ( this.element.type == "text" )
 this.element.select();
 }
 }
 }
}

function TextValidator()
{
 /////////////////////////////////////////////////////////////////////////

 / Class definition.
 /////////////////////////////////////////////////////////////////////////

 if ( Cfx.Class.IsDefined( TextValidator ) == false )
 {
 Cfx.Class.New( TextValidator, Validator );
 if ( Class.IsInitializing(.TextValidator )
 {
 // Define members.

 TextValidator.Method( AcceptChars );

 // Define default properties.

 TextValidator.acceptChars = "\\w";
 return;
 }
 }

 /////////////////////////////////////////////////////////////////////////

 // Setup instance.

 /////////////////////////////////////////////////////////////////////////

 this.InitInstance()
 if ( arguments.length )
 {
 this.fieldName = arguments[0];
 this.element = Cfx.Dom.FindElementById( this.fieldName );
 }
 return this;

 //////////////////////////////////////////////////////////////////////////

 // Methods definitions

 //////////////////////////////////////////////////////////////////////////

 function AcceptChars()
 {
 // setter.

 if ( arguments.length )
 this.acceptChars = arguments[0];

 // getter.

 return Cfx.Js.IsDefined( this.acceptChars ) ?
 this.acceptChars : TextValidator.acceptChars;
 }
}

function WildcardValidator()
{
 /////////////////////////////////////////////////////////////////////////

 // Class definition.

 /////////////////////////////////////////////////////////////////////////

 if ( Cfx.Class.IsDefined( this ) == false )
 {
 Cfx.Class.NewClass( WildcardValidator, TextValidator );
 if ( Cfx.Class.IsInitializing( this ) )
 {
 // Define members.

 WildcardValidator.Method( WildChar );

 // Initialize class variables.

 WildcardValidator.wildChar = "\*";
 WildcardValidator.wildLimit = 4;
 return;
 }
 }

 /////////////////////////////////////////////////////////////////////////

 // Setup instance.

 /////////////////////////////////////////////////////////////////////////

 if ( arguments.length )
 {
 this.fieldName = arguments[0];
 this.element = Cfx.Dom.FindElement( this.fieldName );
 }
 return this;

 //////////////////////////////////////////////////////////////////////

 // Methods definitions

 /////////////////////////////////////////////////////////////////////

 function WildChar()
 {
 // setter.

 if ( arguments.length )
 this.wildChar = arguments[0];

 // getter.

 return Cfx.Js.IsDefined( this.wildChar ) ?
 this.wildChar : WildcardValidator.wildChar;
 }

 function WildLimit()
 {
 // setter.

 if ( arguments.length )
 this.wildLimit = arguments[0];

 // getter.

 return Cfx.Js.IsDefined( this.wildLimit ) ?
 this.wildChar : WildcardValidator.wildLimit;
 }
}