object scope

1. Object Properties scope: Who can see and use this property, and how long it can survive.2. Apply context ServletContext Object scope: For the entire Web application, there is only one ServletContext object, and it can be accessed

Js variable object scope chain Executable code: Global, function, evalContext type created during code execution: global context, function context, and eval ContextExecution context (EC) attributes: Variable object (vo), this, scope chain

Web Program Object Scope:There are three commonly used: request scope, Session scope, application context.The request scope req The smallest, requires the least resources, functions the current requestSession sessions are used for this conversation,

　　/*** 1) object creation: Single case/Multiple cases* scope= "singleton", default value, default is Singleton "service/DAO/Tool Class"* scope= "prototype", multiple examples; "Action object"** 2) When to create?* scope= "Prototype" creates an

For ext JSProgramThe simple creation is mainly to introduce the ext-base.js and ext-all.js two files, and then add some style files, the online ext JS learning materials are also more, I am here also a simple share.Simple processing of ext JS events:

Main configuration items: Root: the root node of the tree. Rootvisible: whether to display the root node. The default value is true. Usearrows: Specifies whether to use the Vista arrow in the tree. The default value is false. Lines: whether to

How to Use Ext. Ajax: How to Use Ext. AjaxExt. Ajax. request ({// ajax requestUrl: 'account/SysArea/InsertRoot ', // request URLParams: record. data. attributes, // list of parametersSuccess: function (response) {// callback function after

How to Use Ext. AjaxExt. Ajax. request ({// ajax requestUrl: 'account/SysArea/InsertRoot ', // request URLParams: record. data. attributes, // list of parametersSuccess: function (response) {// callback function after successful operationVar _ o =

A total of nine built-in objects are defined in the JSP, namely:*request HttpServletRequest;*response HttpServletResponse;*session HttpSession;Page this (the JSP page);*application ServletContext;Config servletconfig;Exception display abnormal,

The Ext tree property methods and events collected to collect the exttree attributes.Efined ByConfig options Ext. util. ObservableView sourcelisteners: A Configuration Object of the Object. It contains one or more event processing functions and is

This may be a classic problem that every jser once had a headache. It is related to memory, closure, and javascript operating mechanism. It depends on functions and performance. The content of this article is mainly referred to in "High Performance

This may be a classic problem that every jser once had a headache. It is related to memory, closure, and JavaScript operating mechanism. It depends on functions and performance. ArticleThe content is mainly referred to in "High Performance

Ext.Ajax.request ({//ajax requestURL: ' Account/sysarea/insertroot ',//Request URLParams:record.data.attributes,//List of referencesSuccess:function (response) {//Operation succeeded callback functionvar _o = Ext.decode (Response.responsetext);

Ext. Data. Tree Inherited from observable, used to store the data structure of the tree MethodTree ([node root])Use root as the root to construct the Ext. Data. Tree object Getnodebyid (string ID): NodeGet the node by the specified ID Getrootnode ()

Ext. Data. TreeInherited from observable, used to store the data structure of the tree MethodTree ([node root])Use root as the root to construct the Ext. Data. Tree object Getnodebyid (string ID): NodeGet the node by the specified ID Getrootnode ():

efined byconfig Options Ext.util.ObservableView Sourcelisteners: ObjectA configuration object that contains one or more event handlers that are added to the object when the object is initialized. ... Defined byproperties Ext.util.ObservableView

This article explains the api development manual of nodejs0.8.8. node. js URL Overview (synopsis) is a simple example of a webserver written with node to output & quot; helloworld & quot;: [javascript] & lt; SPANstyle & quot; FONT-SIZE: 18px;

Ext. Data. Tree Inherited from observable, used to store the data structure of the tree MethodTree ([node root])Use root as the root to construct the Ext. Data. Tree object Getnodebyid (string ID): NodeGet the node by the specified ID

Content• Store. getAt (...) And Store. getById (...)• Store. getCount (...) And getTotalCount () and Store. each (...)• Store. filter (...) And Store. filterBy (...)• Store. find (...) And Store. findBy (...) And Store. findExact (...)• Store.

Tree panelIt is one of the most versatile components in extjs and is suitable for displaying hierarchical data.Tree panelAndGrid panelInherits from the same base class, so allGrid panelThe benefits of features, extensions, and plug-ins that can be