Javascript is an object-oriented language. The objects here are different functions.
VaR jquery = Window. jquery = Window. $ = function (selector, context)
{
//...
// Other internal initialization code goes here
};
You need to know
1 .) dosomethinglocal is defined as $. FN. dosomethinglocal. you can add as many custom functions to the jquery. FN (or simply $. FN) object as required by your plugin implementation. any function you add to the $. FN object is assumed to work on
YesterdayProgramThe value assignment is invalid during Ajax post. si_id has a value in the callback function of post, but it cannot be obtained outside the post function?
VaR si_id $. Post ("/sysbrand/check_name/", {Name: name, type: Type},
We are too familiar with the form passing value in struts2. It is very easy to pass one or more values or attributes of an object.
But we wantUpload an array and expect struts to receive it correctlyWhat should I do?
The following describes how to
Ajax Introduction
Ajax refers to Asynchronous JavaScript and XML (Asynchronous JavaScript and XML ).Ajax is a programming model promoted by Google in 2005.Ajax is not a new programming language, but a new method that uses existing standards.With
Ajax User Logon function Ajax User Logon Ajax user registration Ajax login Ajax detection user name Ajax check user name Ajax function Ajax User Name authentication ASP Ajax User Name authentication Ajax function Ajax ASP login/
Let's talk about
When passing parameters through Ajax, the following functions are used in encoding. To prevent garbled characters, study the following methods carefully.
MethodReturns an encoded String object that can be read on all computers.
Function escape
JSON (JavaScript Object Notation) is a simple data format, which is lighter than XML. JSON is a javascript native format, which means that no special API or toolkit is required to process JSON data in JavaScript. Exercise example ::
First, create
Jquery Ajax-serialize () method
Jquery Ajax Reference ManualInstance
Output serialized form value results:
$("button").click(function(){ $("div").text($("form").serialize());});
Try it yourselfDefinition and usage
The serialize () method creates a
Jquery is an encapsulation of JavaScript, saving programmers from tedious JavaScript code.
Jquery has two common usage methods: Ajax and interface special effects.
In jquery, Ajax communicates with the server through the XMLHTTPRequest object. The
The so-called Ajax is: "Asynchronous JavaScript and XML", Chinese meaning: Asynchronous JavaScript and XML. Ajax is not just a technology. It can be simply understood as a collection of JavaScript + XMLHttpRequest + CSS + servers.
Ajax is a
Today, almost all projects are submitted through Ajax. During the test, I found that the data obtained after each submission is the same. debugging can eliminate the background code issue, so the problem must be at the front-end. Each time the cache
Every time I develop Ajax, I often encounter a problem where Ajax is useless. I have checked the code several times and found that there is nothing wrong with it. I usually lost the key code. The code that is often ignored is:
Ignore in HTML
Xiaodingdong robot web version released (experience using Ajax)
In the past, Ding ding-dong was only allowed to access through MSN or QQ. Now I have added a web access method.Address:
Http://www.domolo.com/domolo/xiaodingdong/index.aspx
There are
I. Load () method (simplest)
Load (URL, [data], [callback])
URL: the address of the loaded page.
Data: Optional. data sent to the server. The format is key/value.
Callback: optional, callback function
1. The simplest application
Front-end
floating advertisement
enter name and birthday
Background
Using system;
Using system. Data;
Using system. configuration;
Using system. collections;
Using system. Web;
Using system. Web.
Static Page
No title page
enter name and birthday
Dynamic page
Protected void page_load (Object sender, eventargs E)
{
// Response. Write ("background data ");
If (request. httpmethod = "Post ")
When jquery Ajax is used to send a download request to the background, the background output is sent to the browser, but the file download box is not prompted. I don't know why.
You can use jquery to create a form and submit it for file download.
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