const querystring = require('querystring');
const url = require('url');
var queryUrl="http://localhost:8888/bb?name=李浩&memo=helloworld&memo=helloC";
queryUrl=url.parse(queryUrl).query;
console.log(querystring.parse(queryUrl)) ;
----------------------------------------------------
// 输出 { name: '李浩', memo: [ 'helloworld', 'helloC' ] }

const querystring = require('querystring');
const url = require('url');
var queryUrl="http://localhost:8888/bb?name==李浩*memo==helloworld*memo==helloC";
queryUrl=url.parse(queryUrl).query;
console.log(querystring.parse(queryUrl,'*','==')) ; 
----------------------------------------------------
// 输出 { name: '李浩', memo: [ 'helloworld', 'helloC' ] }

const qs=require("querystring");
var obj={ name: '李浩', memo: [ 'helloworld', 'helloC' ] }
console.log(
 qs.stringify(obj)
)
/* 
 输出 name=%E6%9D%8E%E6%B5%A9&memo=helloworld&memo=helloC;
 API默认是对中文进行了编码，下面我们再说编码解码的API
*/

const qs=require("querystring");
var obj={ name: '李浩', memo: [ 'helloworld', 'helloC' ] }
console.log(
 qs.stringify(obj,'@','==')
)

const qs = require("querystring");
var url = "name=%E6%9D%8E%E6%B5%A9&memo=helloworld&memo=helloC"
var normalStr = qs.unescape(url)
console.log(
 qs.parse(normalStr)
)
//输出 { name: '李浩', memo: [ 'helloworld', 'helloC' ] }

var obj = { name: '李浩', memo: ['helloworld', 'helloC'] };
console.log(
 qs.escape(
  qs.stringify(obj)
 )
)
// 输出 name%3D%25E6%259D%258E%25E6%25B5%25A9%26memo%3Dhelloworld%26memo%3DhelloC
//连同&和=一起编码了