Some small experiences I have summarized, operating JSON in JS

The commonly used JSON processing methods are briefly summarized. JSON is a lightweight data exchange format that uses a completely language-independent text format and is an ideal data exchange format. The following is the specific operation method of its implementation.

1. Overview

JSON (JavaScript Object Notation) is a lightweight data exchange format that uses a completely language-independent text format, which is ideal Data exchange format. At the same time, JSON is a JavaScript native format, which means that processing JSON data in JavaScript does not require any special API or toolkit.

In JSON, there are two structures: objects and arrays.

1.Object

An object starts with "{" and ends with "}". Each "key" is followed by a ":", and "'key/value' pairs" are separated by ",".

packJson = {"name":"nikita", "password":"1111"}

2.Array

packJson = [{"name":"nikita", "password":"1111"}, {"name":"tony", "password":"2222"}];

The array is An ordered collection of values. An array starts with "[" and ends with "]". Use "," to separate values.

2. Conversion of JSON objects and JSON strings

1. In the data transmission process, json is transmitted in the form of text, that is, a string, and JS operates on JSON objects, so the conversion between JSON objects and JSON strings is the key. For example:

JSON string:

var jsonStr = '{"name":"nikita", "password":"1111"}';

JSON object:

var jsonObj = {"name":"nikita", "password":"1111"};

2. Convert String to Json

var myObject = eval('(' myJSONtext ')');

eval is a function that comes with js, it is not very safe, you can consider it Use json package.

3. TraverseJSONObject

myJson = {"name":"nikita", "password":"1111"( p  myJson){
+ " " +

Running result:

4. TraverseJSONArray

packJson ="name":"nikita", "password":"1111""name":"tony", "password":"2222"( p  packJson){
+ " " +

I prefer this way of writing:

( i = 0; i < packJson.length; i+++ " " +

Run result:

Five, combine twoJSONObjects are assembled into one

(targetJson &&( p =

The usage is as follows:

##

 json1 = {"name":"nikita" json2 = {"password":"1111"

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PHP JSON operation example analysis

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