Client programming in Ajax Learning

First of all, I declare that many of the content in this article is excerpted from the Internet, mainly to improve my own training websites for the company ..

Client Programming

• This topic describes Ajax client object-oriented programming.

SYS. Type

• Type. registernamespace ("namespace name ");
• Classinstancevar. registerclass ("Class Name", base class (optional), interface (optional, multiple write in sequence ));
• Typeinstancevar. registerinterface ("Interface Name ");
• Anamespace. anenum. registerenum ("enumeration name ");
• Typevar. initializebase (the instance that initializes the base class (usually this), [parameters for passing values to the base class constructor] (optional); (the returned value is the base class instance)
• Instancevar. callbasemethod (the instance that calls the base class method (usually this), "base class method name", [parameters passed to the base class method] (optional ));

CodeExample

// Register a namespace named "Demo" <br/> type. registernamespace ("Demo"); <br/> // defines the message class constructor in the demo namespace <br/> demo. message = function (content, publishtime) <br/>{< br/> // by default, the following lines are private attributes <br/> This. _ content = content; <br/> This. _ publishtime = publishtime; <br/>}< br/> // defines the message class method in the demo namespace <br/> demo. message. prototype = <br/>{< br/> get_content: function () <br/>{< br/> return this. _ content; <br/>}, <br/> get_pu Blishtime: function () <br/>{< br/> return this. _ publishtime. format ("yyyy-mm-dd hh: mm: SS"); <br/>}, <br/> tostring: function () // override the method of the base class Object <br/>{< br/> return this. get_content () + "" + this. get_publishtime (); <br/>}< br/> // register the message class in the demo namespace. (I do not know why to define the class first and then register it ..) <Br/> demo. message. registerclass ('demo. message '); <br/> // defines the icontent interface in the demo namespace (the interface cannot have constructors) <br/> demo. icontent = function () <br/>{< br/>}< br/> // define the icontent interface method in the demo namespace <br/> demo. icontent. prototype = <br/>{< br/> showcontent: function () <br/>{< br/>}< br/> // register the icontent interface in the demo namespace <br/> demo. icontent. registerinterface ('demo. icontent'); <br/> // define the constructor of the messagewithuserid class in the demo namespace <br/> // me And then let this class inherit from demo. message <br/> // call the base class constructor using initializebase In the constructor <br/> demo. messagewithuserid = function (userid, content, publishtime) <br/>{< br/> demo. messagewithuserid. initializebase (this, [content, publishtime]); <br/> This. _ userid = userid; <br/>}< br/> // define the messagewithuserid class method in the demo namespace <br/> demo. messagewithuserid. prototype = <br/>{< br/> get_userid: function () <br/>{< br/> return this. _ userid; <br />}, <Br/> showcontent: function () <br/>{< br/> return demo. messagewithuserid. callbasemethod (this, 'Get _ content') <br/>}, <br/> // callbasemethod is used to call the method of the base class <br/> tostring: function () <br/>{< br/> return this. get_userid () + "" + demo. messagewithuserid. callbasemethod (this, 'tostring '); <br/>}< br/> // register the messagewithuserid class in the demo namespace <br/> // It inherits from the demo. message class and demo. icontent interface <br/> demo. messagewithuse RID. registerclass ('demo. messagewithuserid ', demo. message, demo. icontent); <br/> // defines the color enumeration in the demo namespace (the enumeration cannot have constructors) <br/> demo. color = function () <br/>{< br/>}< br/> // defines the color enumeration member in the demo namespace <br/> demo. color. prototype = <br/> {<br/> // "0x" indicates hexadecimal, And the eval is converted to an integer in decimal format. <br/> Red: 0xff0000, <br/> Blue: 0x0000ff, <br/> Green: 0x00ff00, <br/> White: 0 xffffff <br/>}< br/> // register the color enumeration in the demo namespace <br/> demo. color. regis Terenum ("demo. color "); <br/> // The sys. application. notifyscriptloaded Method Add call <br/> // we recommend that you include the following sentence at the end of each JS file <br/> // notify scriptmanager that the script has been loaded <br/> If (typeof (sys )! = 'Undefined') SYS. application. policyscriptloaded (); <br/>

Introduction

VaR testmessage = new demo. Message ('hello', d );
Alert (testmessage. get_content () + "" + testmessage. get_publishtime ());
Alert (testmessage );

• If the above Javascript is defined in a file, you need to introduce the file. For the scriptmanager control, you need to set it as follows:

scripts >
Asp: scriptreference path = " myscript. JS " />
scripts >