JSON (JavaScriptObjectNotation) is a lightweight data exchange format, which is called JavaScript Object Notation. One of the advantages of using JSON for data transmission is that JSON is actually JavaScript. It is based on a text format of the subset of the literal Syntax
The first article in JSON advanced describes how to use JSON in PHP and javascript. I. JSON introduction JSON (JavaScriptObjectNotation) is a lightweight data exchange format. Easy to read and write. It is also easy to parse and generate machines.
", " Python " , "Lisp" ]}The second parameter controls how the object's key value is filtered, and if we only want to output the specified property, we can pass in Array :Json.stringify (xiaoming, [' Name ', ' skills '], ' );Results:{ "name": "Xiaoming", "skills": [ "JavaScript", "Java", "Python" , "Lisp" ]}You can also pass in a function so that each key-value pair of an object is processed first by the function:function
In JSON format, objects, arrays, values, strings, and numbers can be used ).Copy codeThe Code is as follows: Reference: http://www.json.org/json-zh.htmlLet's take a look at the JavaScript eval function.The eval function evaluates a given string of JavaScript code and tries to execute expressions contained in the string
If you want to learn more about EV
For Al and JSON, refer to the following links:
EVal:https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Global_Functions/Ev Al
JSON:http://www.json.org/
Howthe Ev al function works TheEv al function evaluates a given string containing Javascript code, and attempts to execute an expression contained in a string or a series of legitimate
JSON (JavaScript Object Notation) is a simple data format that is lighter than XML. JSON is a native JavaScript format, which means that working with JSON data in JavaScript does not require any special APIs or toolkits.The rules
What is JSON
Json:javascript Object Notation (JavaScript object notation).
JSON is in the form of a list of items surrounded by braces "{}", separated by commas (,), and the item is the property name and attribute value separated by a colon (:). This is a typical dictionary representation and once again shows that the object in
JSON, a JavaScript object tag, is a lightweight data interchange format that is ideal for server-to-javascript interaction. JSON is a data format that is based on plain text.JSON is the native format of JavaScript, and you can use JSON
I have already introduced what is JSON. Next I will use examples to learn how to use JavaScript to call JSON on the client.
First, an open-source JSON parser and string converter provided on the official JSON Website: JSON. js.
JSON (JavaScript Object notation) is a simple data format that is lighter than XML. JSON is the native format of JavaScript, which means that processing JSON data in JavaScript does not require any special APIs or toolkits.
The r
Introduction: In Asp. under the netmvc framework, submitting a complex Json object to the Action method using the Ajax method may cause some problems. Here we use Javascript to solve this problem. In asp. after netmvc3.0, you can use JsonValueProviderFactory to solve the problem... syntaxHigh
Introduction:
Some problems may occur when submitting a complex Json o
Json2.js Download Address: Https://github.com/douglascrockford/JSON-js
After downloading, just the Json2.js file you want to use will be introduced to the page.
1. Json.parse ()
method is used to convert JSON-formatted text strings into JavaScript JSON data, for example:
var
JavaScript-Json object flat introduction:
Some problems may occur when submitting a complex Json object to the Action method using the Ajax method in the Asp.net mvc framework. Here we use Javascript to solve this problem, after asp.net mvc 3.0, you can use JsonValueProviderFactory to solve this problem, but here we p
': ' m ', ' Age ': ' '}, {' Name ":" McGrady "," Sex ":" M "," Age ":" 27 "}]}] ';
We can use the Eval () function to invoke the JavaScript compiler to turn JSON text into objects. Because JSON is an exact subset of JavaScript, the compiler can parse the JSON text correctly
Use Json to exchange data between PHP and JavaScript. JSON (JavaScriptObjectNotation) is a lightweight data exchange format. In short, both xml and json are used to facilitate the interaction between the client and the server. JavaScript Object Notation is a lightweight data
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 javascript and the array fro
. Note the difference between JSON format and object literal (Object literals): The JSON name is strictly represented by quotation marks + name.
Example
Object literal
var objectliteral = { name : "objector. L " , age : "24" , special : "JavaScript" , sayname : function () { return This . name ; } } ;
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 javascript and the array from
"Turn" from:http://blog.csdn.net/semanwmj/article/details/7066306 JavaScript is always used for Web pages, and JSON is always used with JavaScript. If you use it recently, write it.Here is a summary:1. Convert the array in JavaScript and {} into
:
The Code is as follows:
Copy code
Var s1 = "{";Var s2 = "'name5': 'freeze period ', 'name1': 'seeding period', 'name2': 'seedling period ', 'name3': 'growth period', 'name4 ': 'collection period '";Var s3 = "}";Var status_process = s1 + s2 + s3;
Although the value of status_process conforms to the json object format, it is not an object but a string (pieced together );
Convert
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