JSON basic structure

JSON basic structure

JSON: JavaScript Object Notation (JavaScript object Notation) is the syntax for storing and exchanging textual information. Similar to XML. Smaller, faster, and easier to parse than XML. JSON takes a completely language-independent text format, but also uses a similar idiom to the C language family (c, C + +, C #, Java, JavaScript, Perl, Python, etc.). These features make JSON an ideal data exchange language. Easy to read and write, but also easy to machine parse and build (network transfer speed).

the JSON value can be in the form of:

• Number (integer or floating point)
• String (in double quotes)
• Logical value (TRUE or FALSE)
• Array (in square brackets)
• Object (in curly braces)

JSON is simply called objects and Arrays in JavaScript, so these two structures are objects and arrays of two structures that can represent a variety of complex structures

1. Object: Object in JS is represented as "{}" in the content, data structure is {Key:value,key:value,...}    The structure of key-value pairs, in object-oriented languages, key is the property of the object, value is the corresponding property value, so it is easy to understand that the value method is the object. Key Gets the property value, the type of the property value can be a number, a string, an array, several objects. 2. Array: The array in JS is the bracketed "[]" content, the data structure is ["Java", "JavaScript", "VB",...], the value way and all languages, using index get, the type of field value can be number, string, array, object several. Through the object, the array 2 kinds of structure can be combined into a complex data structure.       

JSON basic structure