trojan script.
If a malicious user injects a script to insert a trojan link to the page into a json string, eval can also be used, whereas JSON. parse () does not have to worry about this problem. It can be seen that although eval () is powerful, there are not many opportunities to use it.
My personal summary is now. This is my first blog in my life. It was born on Fool's Day in April 1. I hope you will fo
JSON (JavaScriptObjectNotation) is a lightweight data exchange format. this article mainly introduces how to convert Json objects and strings into json data mosaic and how to use JSON (Summary). For more information, see JSON (JavaScript Object Notation) is a lightweight dat
, using json in AS is not a must or a good choice, because AS is already a good choice for xml parsing, but why can we consider using json? There are the following points:
Json is between plain text (such as: firstName = Brett lastName = McLaughlin email = brett@newInstance.com) and xml (
Brett
McLaughlin
Brett@newInstance.com
A format in
. json_decode ()
This function is used to convert json text to the corresponding PHP Data structure. The following is an example:
12345
$json = '{"foo": 12345}'; $obj = json_decode($json); print $obj->{'foo'}; // 12345
In general, json_decode () always returns a PHP object instead of an array. For example:
123
$
Object Notation) is a lightweight data exchange format. Easy to read and write. It is also easy to parse and generate machines. It is based on a subset of JavaScript Programming Language, Standard ECMA-262 3rd Edition-December 1999. JSON uses a completely language-independent text format, but it also uses a habit similar to the C language family (including C, C ++, C #, Java, JavaScript, Perl, Python, and
Json (JavaScript Object Notation) JavaScript objects notationJSON is a strict subset of JavaScript, using some of the schema classes in JavaScript to represent structured data, because JSON is passed directly to Eavl (), and is no more than creating DOM objectsSyntax for 1,json:
Number (integer or floating poi
(attchJson );
JsonArray is a json data, which is equivalent to defining a json.
Complex json definition. The value corresponding to the key in json can also be a json array. For example, a task information is encapsulated in json
JSON (2): JSON processing on the server and client, and json processing on the server
This section describes how to use JSON to represent data. Next, we also need to solve how to generate JSON-format data on the server to send d
replaced with the return value of the replacer parameter. Finally, add spaces to the value based on the optional space parameter to generate the final JSON text.In this example, the contact object is converted to JSON text using JSON. stringify. Define the memberfilter array to convert only surname and phone members.
example, the following data format requires JSON. NET. The function of LINQ to JSON is to customize JSON data according to the required format.
For example, the json format that is often used in paging is code:
{"Total": 5, // total number of records "rows": [// data list in json
serialize an array and store it, we can easily deserialize the post-serialization application. The same is true of JSON, except that he builds the interactive bridge between client-side JavaScript and server PHP. We use PHP to generate the JSON string, and then pass the string to the foreground javascript,javascirpt can easily be anti-
type is 0,string type is null, the array is [], setting this attribute can ignore the null Value property2. Mapper.setserializationinclusion (JsonInclude.Include.NON_EMPTY);3.//let json be indented for better readability and generally used in the testing and development phases.4. Mapper.configure (serializationfeature.indent_output, true);5.//make map key in natural order6. Mapper.configure (serializationfeature.order_map_entries_by_keys, true);7.//d
repeat the concept. In layman's words, it is a storage format for data, just like a string after PHP serialization. It is a data description. For example, when we serialize an array and store it, we can easily deserialize the post-serialization application. The same is true of JSON, except that he builds the interactive bridge between client-side JavaScript and server PHP. We use PHP to generate the
? I will not repeat the concept. In layman's parlance, it is a storage format for data, just like a string after a PHP serialization. It is a data description. For example, after we have serialized an array and stored it, we can easily deserialize it and then apply it. The same is true of JSON, except that he builds an interactive bridge between client JavaScript and server PHP. We use PHP to generate the
The first step: Get a JSON interface that can be obtained from a URL address
Step two: Take the JSON string through file_get_contents
Step three: Convert a JSON-formatted string (object) into an array,
Json_decode (
Json,tRue) number of arguments :
JSON string
follows:
{"Name": "Michael", "Address":
{"City": "Beijing", "Street": "Chaoyang Road", "Postcode": 100025}
}
JavaScript processing JSON data
It shows how to represent data in JSON, and then we'll work out how to generate JSON-formatted data on the server side to send to the client, and how the client uses JavaSc
to support JavaScript at the front end. I think all the people who have parsed XML will be headers of trees and nodes. It is undeniable that XML is a good data storage method, but its flexibility has caused difficulties in parsing. Of course, the difficulty mentioned here is relative to JSON, the main character of this article. what is JSON? I will not repeat the concept. In general, it is a data storage
PHP. We use PHP to generate the JSON string, and then pass the string to the front-end Javascript. Then we can easily apply the Javascirpt anti-JSON string. It is really like an array.To put it bluntly, how to use JSON. PHP5.2 has built-in support for JSON. Of course, if it
(true );Alert (myobj. name );}
JSON also provides java jar package http://www.json.org/java/index.html API is also very simple, the following example
Add Request Parameters in javascript
Js Code
The Code is as follows:
Function sendRequest (){Var carr = new Car ("Dodge", "Coronet R/T", 1968, "yellow ");Var pars = "car =" + carr. toJSONString ();Var url = "/MyWebApp/JSONTest1 ";Var mailAjax = new Ajax. Request (Url,{Method: 'get ',Parameters: pa
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