qs的两个用途

qs是npm安装的库

1.qs.stringify()   将对象序列化成URL的形式，以&进行拼接 

const Qs = require('qs');
let obj= {
     method: "like",
     projectId: "85",
     appToken: "abc",
     datasetId: " 12564701"
   };
Qs.stringify(obj);
console.log(Qs.stringify(obj));    //method=like&projectId=85&appToken=abc&datasetId=1256701

const { stringify } = require('qs');
const sign_str = stringify(sortParams, {
      encoder: str => str,
    });

2.qs.parse()      将序列化的内容拆分成一个个单一的对象

const Qs = require('qs');
let url = 'method=like&projectId=85&appToken=abc';

Qs.parse(url);
console.log(Qs.parse(url));     

// {

     method: "like",
     projectId: "85",
     appToken: "abc",
   };