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js报错�Q�Object doesn't support this property or method

Tue, 04 May 2010 06:09:00 GMT

js报错�Q?br /> Object doesn't support this property or method
问题原因�Q?br /> 1�Q�js代码用了javascript关键�?br /> 2�Q�方法名和表单或者div form名冲�H?br /> 3.button中有name�Q?submit"
4.上传囄��时提�C�：Object doesn't support this property or method
原因�Q�服务器上安装的AspJpeg的版本低�?.4版�?br /> 解决�Ҏ��Q�安�?.4或以上版本的AspJpeg�l��g�?

無所��?/a> 2010-05-04 14:09 发表评论

extbuilder

Tue, 04 May 2010 03:20:00 GMT

UserGuide

ExtBuilder User Guide

Introduction
Installation

Eclipse 3.x
Apatana

Starting

Kick start
Overview

How to

Set Properties
Set Layout
Toolbar
Buttons
Grid
Tree
Listeners
Extension

Introduction

ExtBuilder is an eclipse plugin can help developer work out good style Ext javascript code without typing code.

Installation

Eclipse 3.x

make sure you eclipse version is 3.2,3.3 or 3.4 with GEF installed.

download archived update site from http://code.google.com/p/extbuilder/downloads/list
Click Help->Software Updates->Find and Install...->Search for new features to install,Click Next
Click New Archived Site-> Browse to extbuilder_update.zip and click Open.
Click OK and follow the instructions to install.
Restart you eclipse

Apatana

Install Apatanta as a plugin to Eclipse.
Install ExtBuilder to Eclipse

Note: Apatana Studio removed some build-in plugins from Eclipse, such as GEF,icu,JDT,etc. If you definitely want to use Apatana Studio without eclipse, please install these plguins first.

Starting

Kick start

Click Windows->Preferences..->ExtJs Builder
Click Browse button to select your Ext home directory.

Click File->New, then select Web->ExtJs Page. a wizard dialog will appear.

Click Next

Input the namespace you want
Input class name you want, extbuilder create one class in one file, just like Java
Input the file name, default is the class name
Select super class, default is Ext.Panel, you also can create a window by select Ext.Window
Click Finish.
Then there are two files created in Package Explorer, for example: CorpSelectPanel.ext and CorpSelectPanel.js. The first file is used by extbuilder, the second file is the script file for you.

Overview

Before you start to editing a Ext page, make sure you opened Outline View and Properties View. If not, please click Window->Show View to open these two views.

Editor View
It’s a multi-pages editor contains a source code editor and a UI editor. In source code editor, you can see the real code extbuilder generate for you. Please focus the initUIComponents function. In UI editor, you can see one palette at left side and a embedded browser at right side. With the embedded browser, you can preview the code generated by ExtBuilder.

Outline View
The outline view is a component tree view. You can select specific component in the view.

Properties View
The most important view you have to deal. In this view, you can set the configuration of one component. For example: For a Panel component, you may set the title property to ‘MyPanel’, the layout property to ‘Border’, the width property to ‘100’, etc. For a GridPanel component, you may set the store property and columns property. All you change make to a component take effect immediately. Both the code editor and UI editor will change. It’s a good way to watch your settings how change the UI to your wanted style.

Drag Components
In UI editor, you can see a palette with some components in several folders. Now extbuilder supports most components in latest Ext 2.2 You could click one component, such as a Panel then move the mouse to outline view, there must be a component named panel, it's the root component of one panel class. Click the mouse again, then the root panel component now have a child panel. In the way, you can use any components and organize the component tree as you wish. Although you may think drag a component and drop it to a canvas is better, but that means ExtBuilder need to implement all Ext components drawing,behavior and layout in Java code. From my opinion, this way is the fastest way to build a GUI page.

How to

Set Properties

Ext component have many properties. ExtBuilder divide these properties into two categories: common properties and advanced properties. By default, only common properties are shown,you can show advanced properties by click the Advanced button at the top toolbar of Properties View. Properties can be string, integer,drop down list. Some special properties like store, toolbar,buttons,columns Model will pop up a dialog for user set.

Set Layout

There are two panels, one parent, one child.

Create a new Ext page
Set the root panel's tilte to 'ParentPanel'
Add a Panel to page root panel component
Set the child panel's title to 'ChildPanel'
Click the parent panel on outline view
Set the parent panel's layout to 'Border'
Click the child panel on outline view
Set the child panel's region to 'center'

Because Ext border layout require a center region component, so when you set the layout to 'border', and not set the child panel's region to 'center', you may see some error message in browser, it's not a bug of ExtBuilder.

FormPanel

Create a new Ext page
Add a FormPanel to root panel
Set the FormPanel's layout to 'column'
Add two Panels to FormPanel, set columnWidth to '.5'
Set these two Panels's layout to 'form'
Add 4 TextField to these Two Panel, each have two

Then you get a two column form panel

Toolbar

Each Ext Panel has two toolbars, tbar and bbar.

Click one Panel of Outline view.
Click Properties view, scroll to tbar or bbar property
Click the right side button '...' to show Toolbar Settings Dialog
In Toolbar Settings Dialog, click Add Button(+) to add Button,Separator,Spacer,Fill,TextItem and MenuButton. Menu editing is not ready in current version.
Change the text toolbar text, by default, the handler is as "onButtonTextClick". Of course, you can change the handler function name.
Then switch to Source code Editor, see what happened.

         tbar : new Ext.Toolbar([{ 
                                handler : function(button, event) { 
                                        this.onButtonClick(button, event); 
                                }.createDelegate(this), 
                                text : "button" 
                        }])

Look at this code block, I use a little trick. Because ExtBuilder need to show preview page for users, some javascript errors will make the preview page as blank page. So I have to make it runs fine when renderer ext components. You may need to write your own event handler function in your class. For example:
      ..., 
      onButtonClick : function(button, event){ 
         // your code here 
      }

Buttons

Each Panel has one buttons property. Just same as Toolbar buttons editing except the component can add here is only Ext.Button. You can use buttonAlign to align button at left,right or center.

Grid

ExtBuilder support three grid panels. GridPanel,PagingGridPanel and EditorGridPanel. PagingGridPanel is a gridpanel with paging toolbar on bottom.

Store

Store can take data from remote(HttpProxy) or local(MemoryProxy). Here is a example we use MemoryProxy to build grid.

Click '...' button to show Store Settings Dialog
Select MemoryProxy in Basic Page
Click Sample button to generate some random data
Click OK button to save store settings.
Add loadData function in class

    loadData : function() { 
                    this.store1.load(); 
        }

here store1 is the component name of store.

Add code in class constructor function

     system.CorpSelectPanel = function(config) { 
            Ext.applyIf(this, config); 
            this.initUIComponents(); 
            system.CorpSelectPanel.superclass.constructor.call(this); 
            //load store data here 
            this.loadData(); 
         };

Now, you can see the data at preview page.

無所��?/a> 2010-05-04 11:20 发表评论

ExtJS Record �?Store 说明

Tue, 04 May 2010 03:18:00 GMT

摘要: �Q�、Record 　　首先需要明��是�Q�ExtJS中有一个名为Record的类�Q�表格等控�g中��用的数据是存攑֜�Record对象中，一个Record可以理解为关�p�L��据表中的一行，也可以称��录。Record对象中即包含了记录（行中各列�Q�的定义信息�Q�也��是该记录包含哪些字�D�，每一个字�D늚�数据�c�d��{�）�Q�同时又包含了记录具体的数据信息�Q�也��是各个字段的��|��?　　我们来看直接使用Record的代码： ... 阅读全文

無所��?/a> 2010-05-04 11:18 发表评论

ExtJS+DWR+Spring+Hibernate开发HRMS

Tue, 04 May 2010 03:14:00 GMT

http://blog.csdn.net/lenotang/archive/2008/10/02/3009532.aspx
http://blog.csdn.net/lenotang/archive/2008/10/02/3009575.aspx
http://blog.csdn.net/lenotang/archive/2008/10/02/3009685.aspx
http://blog.csdn.net/lenotang/archive/2008/10/02/3009688.aspx
http://blog.csdn.net/lenotang/archive/2008/10/02/3009692.aspx

無所��?/a> 2010-05-04 11:14 发表评论

Ext-API详解

Tue, 04 May 2010 03:11:00 GMT

1、Ext.apply(Object obj, Object config, Object defaults ) : Object
��config中的所有属性复制到obj中，如果配置了defaults�Q�则先将defaults中的属性传入obj�Q�然后再��config中属性传入，一般defaults用于定义一些默认倹{�?br /> 注意�Q�每个参数都必须是对象object�Q�而不能是function或其他�?br /> 创徏object可以通过new function(){}、new Object()、{}�{�方法创建�?/p>

2、Ext.emptyFn: Function
用于�q�回一个空函数�Q�便于在�E�序中创建空函数。Ext.emptyFn�q�回function(){}

3、Ext.applyIf(Object obj, Object config) : Object功能如同Ext.apply,但是只把config中存在而obj不存在的属性复制过厅R�?/p>

4、Ext.addBehaviors( Object obj ) : void为页面中一个或多个元素��d��事�g
元素使用css规则查找�Q�其中元素与事�g用@隔开 Ext.addBehaviors({
   //为id为foo的元素下的所有a元素��d��click事�g
   '#foo a@click' : function(e, t){
       // do something
   },
   // 为多个选择器添加相同的事�g(mouseover)。在@之前使用逗号分开
   '#foo a, #bar span.some-class@mouseover' : function(){
       // do something
   }
});
5、Ext.id( [Mixed el], [String prefix] ) : String
�q�回一个唯一的id倹{�?br /> 如果只需要获取一个唯一的id��|��则直接调用Ext.id()�Q?br /> 如果需要�ؓ某个元素讑֮�一个唯一的id值�ƈ�q�回id则调用Ext.id(el)�Q�el为元素Id、Dom对象或Ext的Element对象�?br /> 如果需要指定特定的前缀�Q�则需要传入第二个参数�Q�如Ext.id(el,”myPrix-”)�Q�默认前�~�为ext-gen�Q�如默认�q�回id可能为ext-gen4�Q�指定了前缀后可能返回myPrix-4�?/p>

6、Ext.extend( Object subclass, Object superclass, [Object overrides] ) : void实现对象�l�承�Q�目前还不太了解具体原理 �Q�？�Q?/p>

7、Ext.namespace( String namespace1, String namespace2, String etc ) : void
创徏命名�I�间�Q?br /> 如Ext.namespace("Company","MyNS.mydata","Data.format.string")
然后可以创徏如MyNS.mydata.doit=function(){…}的接�?br /> 注：命名�I�间的简易调用：Ext.ns()�Q�在Ext Api中未�l�出此用法�?/p>

8、Ext.urlEncode( Object o ) : String��一个json对象转换�U�url参数�Ԍ��支持通过数组��Z��个参数设定多个倹{�?br /> 如将{a:1,b:2,c:[1,3,5,7]}转换为a=1&b=2&c=1&c=3&c=5&c=7

9、Ext.urlDecode( String string, [Boolean overwrite] ) : Object��url参数串�{换�ؓjson对象�Q�overwrite如果为true�Q�则后面的同名参数��D��盖前面的同名参数��|��默认为false即不覆盖而以数组形式�q�回�Q��?br /> �?Ext.urlDecode("a=1&b=2&c=1&c=3&c=5&c=7")
�q�回的对象内容�ؓ{a:1,b:2,c:[1,3,5,7]}
Ext.urlDecode("a=1&b=2&c=1&c=3&c=5&c=7",true)
�q�回{a:1,b:2,c:7}

10、Ext.each( Array/NodeList/Mixed array, Function fn, Object scope ) : void遍历array�q�对每项分别调用fn函数。如果array不是数组则只执行一�ơ�?br /> 如果某项fn执行�l�果�q�回false�Q�必��L��false�Q�undefined无效�Q�，遍历退出，后面的array��将不被遍历�?br /> 遍历�q�程中每�ơ�ؓfn传入参数分别为[当前数组��]�Q�[当前索引]和[数组array]三个参数�?br /> Scope用于讑֮�fn函数中的this指针�?br /> �?Ext.each([1,3,5,7],function(v,i,a){
      alert("index: "+i+" value: "+v+" array.length�Q?+a.length)
});
��@环弹出：
index:0 value:1 array.length�Q?
index:1 value:3 array.length�Q?
index:2 value:5 array.length�Q?
index:3 value:7 array.length�Q? Ext.each([1,3,5,7],function(v,i,a){
    alert("index: "+i+" value: "+v+" array.length�Q?+a.length);
    return v!=5; //到第三项后遍历退�?br /> });

��@环弹出：
index:0 value:1 array.length�Q?
index:1 value:3 array.length�Q?
index:2 value:5 array.length�Q?

11、Ext.combine(arg1,arg2..argn) : Array //该方法在Ext2不推荐再使用
用于实现�Ҏ��l�的合�ƈ�Q�如果是字符串则作�ؓ只有一��的数组合�ƈ�?br /> �?var a1=[1,3,5],b1=["a","b","c"];var c1="xxyznbde";
Ext.combine(a1,b1,c1) �q�回[1,3,5,a,b,c,xxyznbde]

12、Ext. escapeRe( String str ) : String
��属于正则里的特�D�字�W�进行�{义�?br /> �?Ext.escapeRe("(ab)$\sa342{}[dd]")��返回$ab$\$sa342\{\}\[dd\]�?/p>

13、Ext.callback(cb, scope, args, delay) :void //该方法�ؓExt的内部方�?br /> 调用一个函数或延迟调用一个函数�?br /> Cb:调用的函数�?br /> scope:cb中this指针�?br /> args�Q�传如cb的参敎ͼ�以数�l��Ş式表�C��?br /> delay�Q��g�q�多��毫�U�执行cb�?br /> �?Ext.callback(function(x,y){alert(x+y)},this,[3,5],1000);��于1�U�钟后弹�?�Q�即3+5的结果�?/p>

14、Ext.getDom( Mixed el ) : HTMLElement�Ҏ��传入的id/dom节点/Ext的Elemenet对象�Q�返回其dom对象�?br /> 如alert(Ext.getDom("a").innerHTML);�?br /> alert(Ext.getDom(document.getElementById("a")).innerHTML);
��返回id为a的元素的innerHTML内容�?/p>

15、Ext.getDoc()/Ext.getBody() : Ext.Element分别�q�回��面的document对象和body对象�Q�返回��gؓExt的Element对象�Q�而非Dom对象�?

16、Ext.getCmp( String id ) : Ext.Component�Ҏ��传入的html元素id�q�回该元素的�l��g�c�d��Q�返回��gؓExt的Component对象�?br /> 必须保证该id对象的元素是Ext的一个内部组�Ӟ��通过Ext创徏的组�Ӟ��Q�否则什么都不返回�?/p>

17、Ext.num( Mixed value, Number defaultValue ) : Number
验证value是否是一个数字，如果是则直接�q�回否则�q�回defaultValue�?br /> �?alert(Ext.num(5,7))�q�回5�Q�alert(Ext.num("5",7)) �q�回7

18、Ext.destroy( Mixed arg1, Mixed (optional), Mixed (optional) ) : void销毁创建的Element或组�?Component)�Q�即销毁其所有的事�g监听�Q�dom节点�Q��ƈ调用对象本��n的destory�Ҏ��Q�如果存在的话）�Q�传入的参数�c�d��为Ext.Element或Ext. Component�Q�可以一�ơ性传入多个对象进行销毁�?br /> �?Ext.destory(menu,el,Button);会销毁menu,el,Button三个对象�?/p>

19、Ext.removeNode(htmlElement el): void //Ext内部�Ҏ��
删除指定的dom节点。传入参��Cؓdom对象�?br /> �?Ext.removeNode(document.getElementById("ab"));

20、Ext.type( Mixed object ) : String�q�回传入的对象的�c�d��?br /> 包括如下�c�d��Q?br /> string,number,boolean,function,object,array,regexp,element,nodelist,textnode,whitespace
�?Ext.type("ab")�q�回string
Ext.type(20)�q�回number
Ext.type([3,5,6])�q�回array
Ext.type(/reg/)�q�回regexp
Ext.type(document.body)�q�回element�?/p>

21、Ext.isEmpty( Mixed value, [Boolean allowBlank] ) : Boolean��查一个值是否�ؓnull/undefined或是否是�I�，如果是则�q�回true�?br /> 如果传入allowBlank为true�Q�则只检查是否�ؓnull或undefined�?br /> 如： Ext.isEmpty("a")�q�回false�Q?br /> Ext.isEmpty("")�q�回true�Q?br /> Ext.isEmpty("",true)�q�回false�Q?br /> Ext.isEmpty(null)�q�回true�?/p>

22、Ext.value(String v,String defaultValue[,[Boolean allowBlank]):String //Ext内部�Ҏ��
��查v是否是�ؓnull/undefined或空�Q�如果是则返回defaultValue�Q�否则返回v。如果allowBlank参数为true�Q�则允许v为空�Q�即当v为空时不�q�回defaultValue而返回空�Q��?nbsp;

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無所��?/a> 2010-05-04 11:11 发表评论