About Ajax controlsAjax is not a technology. I think this is correct. The exact point should be the combination of a culture and a method, I think the various widgets or gadgets generated by them will be easy to understand, and there may be no fear
0. How does it work?
1. Create Server Functions
2. Client call
3. Callback Function
4. Processing type
5. Session Access
Appendix
0. How does it work?
With the Ajax package, ASP. NET developers can quickly and conveniently
Is Ajax required to use XML? I don't think so.
Reasons for not using XML:1. XML parsing using JavaScript scripts is slow;2. For some simple data, it is a bit confusing to use XML;3. XMLHTTP provides responsetext, which makes it easier for everyone
After a request is sent, the client cannot determine when the request will be completed. Therefore, an event mechanism is required to capture the Request status. The XMLHTTPRequest object provides the onreadystatechange event to implement this
Haha, continue. This course is not much to talk about. We often talk about refreshing new uploads.
The simple registration we made in the last lesson is really simple. I have not changed many features, but please remember
I will certainly
How to Use Ajax + URL rewriting:
Error message: 'sys. webforms. pagerequestmanagerservererrorexception: An uknown error occurred while processing the request on the server. The status code returned from the server was: 404.
Add the following
Ajax is one of the technical features of Web2.0. After a long time, I finally have time to write it today. I am also in the initial stage. I have different opinions to discuss with you!
The general process is like this. ① Create an XMLHTTPRequest
Ajax does not refresh new pages. It is already a familiar thing, probably because there is a js method on the Web Front-end page to request the paging data interface on the server through Ajax, after obtaining the data, create an HTML structure on
After the first two tutorials, I believe that the reader has some experience with the actual Ajax application.ArticleLet's summarize the common Ajax technologies.
Use AjaxProcess:
L create an XMLHTTPRequest object based on the browser type.
Ajax is a very popular technology recently. It is also very popular nowadays. Of course, it is not a new technology, but a unity under various existing technologies and support mechanisms. In my projects, Ajax is occasionally used to give users a
effect Express: the effect of this control is that no matter how you drag the scroll bar or drag the browser window size, the control will change or always reset to the fixed position of the browser window.
(AlwaysvisiblecontrolExtender Used to
[Reference] "This extender targets any ASP. NET panel control. You specify which control or controls on the page shocould act as the Open and Close controllers for the Panel ."
Attribute name
Description
In this period of time, when Ajax is used, the old ASP. NET
Program Upgrade to the Ajax program. During the upgrade, you can find that response. Write (" ")
Code An error occurred during execution. find the solution on the Internet. Most of the
This section focuses on learning these three basic controls. These three controls are not very difficult to learn. They can all be applied to extends, the extended functions of vs2008 can be quickly achieved;
Now let's take a look at the effect:
The use of the pager paging control was recorded last time. Now, the problem arises again. How can I refresh the page without modifying the URL? URL changes, causing page changes. So I have to study the pager control again. Next I will introduce how
Due to the emergence of jquery, compile JSCodeIt has become abnormal and common, and now the Web is full of Ajax. You can write a web without Ajax on your own.
Of course, in. the development of the control mode in net has become more universal:
Jquery. Ajax error debugging help information
The following is a detailed list of Ajax parameters in jquery:
Parameter Name
Type
Description
URL
String
(Default: Current page address) the address of the
1). Implement Ajax functions using traditional JavaScript methods
Var objXmlHttp = null; // declare an empty XMLHTTP variable
function CreateXMLHTTP() {
// Returns the object of the Variable Based on the browser.
if
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