JSON object

JSON stands for JavaScript Object Notation and is also a lightweight text data interchange format.

Rules for JSON syntax, which is a subset of JavaScript's object representation syntax.
1. Data is in name/value pairs
2. Data is separated by commas
3. Curly brackets hold objects
4. Square brackets hold arrays

Example:

var person = {
	"name":"devZhang",
	"job":"iOS dev",
	"company":["China Life Insurance", "Huianda", "Yuanguang Software", "Huika Century", "Weishijiajie"],
	"address":"Shenzhen Nanshan District"
};

Get the value corresponding to a name in the JSON object

var name = person["name"];
document.write("<br> JSON对象中的name值：" + name + "<br>");

The name value in the JSON object: devZhang

JSON object to string

var objToStr = JSON.stringify(person);
document.write("<br> JSON object to string: " + objToStr + "<br>");

Convert JSON object to string: {"name":"devZhang","job":"iOS dev","company":["China Life","Huianda","Yuanguang Software","Huika Century" ,"Weishijiajie"],"address":"Shenzhen Nanshan District"}

String to JSON object

var strToObj = JSON.parse(objToStr);
document.write("<br> String to JSON object: " + strToObj + "<br>");

String to JSON object: [object Object]