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 (): NodeGet the root node, which is more convenient to get from the property Root
Setrootnode (node): NodeSet the root node
The event hasAppend: (TREE tree, node
Latency loading of Ext, ext latency
You may have encountered the following situations when using extjs with multiple threads:When rendering several components at the same time, if the component content is dynamically read, sometimes the component content is not correctly rendered. For example, if two forms are rendered at the same time, the form fields are dynamically obtained, and the fields in form2 over
);--------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------Ext.function API to provide you with 13 methods, are not used to say--------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------Ext.dateExt.Date.between (Date date,date start,date end):
First: The Eclipse Environment is established (based on the project team's current environment settings)
Second: Download Jseclipse:http://trials.adobe.com/pub/esd/labs/jseclipse/jseclipse_plugin_040207.zip
Third: Configuration file association way: Window-preference---general-editors:file association, find *.js, set Jseclipse to default.
Four: Open any JS file (in order to appear jseclipse menu), under the Jseclipse menu, select Add Library, navigate to Ext
If you encounter many query problems on the list page, the query fields are of many types, so you need to display query columns in multiple rows. The toolbar is used in the query column first in Ext. grid. the GridPanel must contain a tbar object.
Then add listeners :{
'Render': function (){
Bbar2.render (this. tbar); // add one tbar
// TwoTbar. render (this. tbar); // add two tbar
// ThreeTbar. render (this. tbar); // add three tbar
}
}
W
A JS access B js, and a Select the GUID of the line to B to the JS processing mattersA's JS notationvar receiverfrom = new Xxx.xxx Child JS method body name ({parentcmp: _this, patientname:in_org_id: _this.grid.getselectionmodel (). Selected.items[0].raw. in_org_id,xx:123}); Receiverfrom.show ();(function () {Xxx.xxx Sub-js method body name = Ext.extend (construct, {in_org_id: ' xxx ', //define the initialization value, if it is passed over, then the value is passed over the value, not ' xxx ',
Sample program Brief:
This demo provides pop-up form new data to demonstrate that the data will be displayed using Gridpanel, and Add a toolbar button for Gridpanel.
Ext Component to use
This demo involves the Gridpanel,formpanel and window three components in ext.
Effect chart
Now start with the code, first look at the code snippet that created the Gridpanel
Copy Code code as follows:
Defin
1. ArrayIndexOf (Object O): Number method
Remove (Object O): Array method
2. DateJavaScript is not convenient for date time operations, and Ext has basically added more extensions here. The more important are:
Add (String interval,number value):D ate method
Where interval represents the period to join, and a valid string is
Ms--------represents milliseconds
S-----------represents seconds
Mi---------means minutes
H----------means hours
D---------means
Ext. Net Learning Guide 001 install Ext. Net, 001ext.net
Ext. Net version: 4.1.0
Ext. Net Official Website: ext.net
Ext. Net official Demo: mvc.ext.net
Ext. Net MVC Example download: github.com/extnet/Ext.NET.Examples.MVC
To ensure that the developer's dataproxy API is used correctly, we define an API for Ext. Data. API Singleton to manage the data. In addition to defining the four crud operations: Get, view, change, and destroy, these operations are also mapped to restful HTTP methods: Get, post, put, and delete.
Let's take a look at the source code. VaR validactions ={} is to save the "reverse Ext. Data. API. Actions hash
As we all know, with ext, we can save art. But this morning, a customer suddenly said that our product occupies a very high browser resource, and a page even reaches 300 MB-1000 MB until the memory is full. At first, I thought that the browser had visited other pages and the resources were not released in time. After I went in and tested it myself, I found that every time I clicked a window implemented using Ext
Extjs uses Ext. tooltip and Ext. quicktips to implement the floating prompt function.
QuicktipsCodeExample: you only need to add Ext. quicktips. INIT (); to use it on the HTML page. The HTML page can be accessed through:
We can see the following results:
You can also customize these quicktips attributes:
Ext
Ext. ajax. timeout, ext. ajax. request
The company has a small product that uses ext's ajax function. Later, when the data volume is large, query timeout is always reported. After analysis, it is caused by the default timeout setting. Later, it adds a sentence to the jsp page.
Ext. Ajax. timeout = 900000; (timeout is 15 minutes, in milliseconds. The default valu
Ext. Data. Connection
Access the specified URL. This is an asynchronous call class. If you want to obtain server information, specify the callback method or specified listener in the request parameter (it is invalid for file upload)
Connection (Object config)Constructor. config is defined {Autoabort: Boolean,Defaultheaders: object,Disablecaching: Boolean,Extraparams: object,Method: string,Timeout: Number,URL: String}Object
Method: The method inherite
because all components in ext2.0 are inherited by observable, to understand Ext, you must first start with ext. util. the observable is used to manage the event object. To understand this, the observable must first start with ext. util. event. Ext. util. event is an encapsulated and exquisite object, but unlike what y
The next day I learned about YUI. Ext and encountered some JS Syntax problems!
Anonymous function An anonymous function
An anonymous function is called without a name.
Function (x, y) {return x + y}
Without a name, you cannot call it directly or call it. You can assign a value or handle a closure at most (what is a closure?), for example:
Var sum = function (x, y) {return x + y };
Alert (sum (1, 2 ));
At this time, it is equivalent to the tr
Ext. Net learning essay 002 default button, ext. net002
Press enter in FormPanel to trigger the click Event of the default button. The setting method is to set the DefaultButton attribute in FormPanel. If this attribute is not set, the last button is used by default.
1. The last button is the default button by default.
X. formPanel (). buttons (X. button (). text ('first click'), X. button (). text ('defaul
Ext. Net installation and application, Ext. Net installation Application1. latest Version 2. open the file and it will contain the following files: Ext. net. dll Ext. net. utilities. dll Ext. net. xml Newtonsoft. json. dll Newtonsoft. json. xml 3. open Visual Studio, create
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