1. Basic terminology
Ajax (Asynchronous JavaScript and XML, asynchronous JavaScript and XML): Ajax is a technology for creating fast Dynamic Web pages, and Ajax enables asynchronous updating of Web pages by making small data exchanges in the background with the server. This means you can update portions of a Web page
rights elements, can contain plain text, escape HTML, or JavaScript code. These structures are language-sensitive, so the xml: lang attribute must be considered;
Introduction to JSON parser Processing Using Servers
Describes the usage characters of a JSON object.
Summary of the usage tips and descriptions of the
When AJAX is used for interaction between the server and the client, the common practice is to let the server return a JSON string and parse it into a JavaScript object on the client. The method used for parsing is generally eval or new function. At present, IE8 and Firefox3.1 have built-in native JSON objects, which are said to have improved performance ). In ac
Typically, the AJAX request returns a format of JSON or XML, and if JSON is returned, it can be manipulated by converting to a JavaScript object, as follows:
1, controller implementation of Ajax request
@RequestMapping public
void Getlocations (@RequestParam String location, PrintWriter printwriter) {
if (
JSON (JavaScript Object Notation) is a lightweight data exchange format.
In short, both xml and json are used to facilitate data exchange between the client and the server, especially for Object-type data, such as the most common array.
The following example transfers the array from php to
Json:javascript Object Notation (JAvaScript Object Notation) Similar to XML, in the form of text (saved in a text file or a string, for example), such as:JSSTR = {"Department": "History department", "Class": "Class", " student":[ {"name": "Zhang San", "Age": 25, "gender": "Male"}, {"name": " John Doe "," age ": 20," gender ":" Male "}, {" na
name.
getResponseHeader () Method:
By reading the header information, you can read the Content-type (content type), content-length (content length), last-modify (last modified) date, etc., depending on the specific site.
getAllResponseHeaders () Method:
Get all the header information.
The next example is to get the header information:
Copy Code code as follows:
This example works well under IE, under the FF dead or alive out, MS Reason is FF does not support ActiveX ... Ask th
JSON (JavaScript Object Notation) is a lightweight data exchange format.In short, both xml and json are used to facilitate data exchange between the client and the server, especially for Object-type data, such as the most common array.The following example transfers the array from php to
This article describes how to use Json to implement data exchange between PHP and JavaScript. For more information, see JSON (JavaScript Object Notation) is a lightweight data exchange format.
In short, both xml and json are used
This article describes how to use Json to implement data exchange between PHP and JavaScript. For more information, see JSON (JavaScript Object Notation) is a lightweight data exchange format.
In short, both xml and json are used
I want to traverse the JSON object tree, but why can't I find any library. It seems to be not difficult, but it feels like reinventing the wheel.There are many tutorials in XML that show how to traverse the XML DOM Tree: (Workaround 1:If you think what JQuery is,OverkillWith this primitive task, you can do this:Your objectvar o = { foo: "Bar", arr:[1,2,3],
JSON is a popular data protocol that can be easily parsed by JavaScript. However, the default data serialization method of web services developed by Asp.net is XML, in order to study how to enable Web Services to interact with clients in JSON data format, I made the following attempts.
My development environment is:
content-type (content type), content-length (content length), last-modify (last modification) date, and so on, depending on the specific website.GetAllResponseHeaders () method:Obtain all the header information.The following example shows how to obtain the header information:View Code
This example worked very well in IE. The reason for MS is that FF does not support ActiveX... Ask the experts to solve the problem... Rz________________________________________JSONThe full name of
the header information, you can read content-type (content type), content-length (content length), last-modify (last modification) date, and so on, depending on the specific website.GetAllResponseHeaders () method:Obtain all the header information.The following example shows how to obtain the header information:Copy codeThe Code is as follows:
This example worked very well in IE. The reason for MS is that FF does not support ActiveX... Ask the experts to solve the problem... RzJSON The full na
What is JSON:is a data interchange format that can replace XML JSON syntax rules:in the JS language, everything is an object. Therefore, any supported type can be represented by JSON, such as strings, numbers, objects, arrays, and so on. However, objects and arrays are two of the more special and common types: 1. The object is represented as a key-value p
1. Object literal ===json object of type?
2. Suppose there is a JSON-type object, such as Var a={};
3. The following ways to manipulate JSON are different:
①a.propertya=valuea;
②var A={propertya:valuea};
is a way of internally defining an external attribute
Reply content:
1. Object literal ===json object of type?2
= valueA and a. prototype = {propertyA: valueA.
The JSON type object does not exist.var obj = {};It is called the object literal. JSON and XML are a set of syntax formats.
a={propertyA:valueA};Is to assign a value directly to the literal,a.propertyA=valueAOra[propertyA]=valueACan be used to access/modify/add literal attribute values. (When using the vertex
Json:javascript Simple Object notation.JSON is the object of JS, but it omits the tags in the XML, but instead uses the {} to complete the description of the object.Defining objectsvar person = { // by property Name: property value to indicate, different attributes passed, to interval age:25, function() { alert (this, age); } // the last property cannot be followed by a }person.say ();Defining an Ordinary arrayYou can still create
Eval functions are of a lot of use in js. Next I will introduce eval's json parsing instance to all of you. Based on this instance, we will introduce some precautions for processing json data in eval, I hope this article will be helpful to you. JSON (JavaScript Object Notation) is a simple data format, which is lighter
following is the verification tool class. Of course it is not very powerful. I am just a small example here to illustrate the usage of JavaScript static classes.
// Verification tool-static class
Var Validate = {
// Icon-public field, I do not know how to implement private field
IconOk:"OK",
IconError:"Error",
// Static method-Enumeration
Match: function (regex, text ){
// This keyword is required for internal use of fields.
If(R
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