Node.js 查询字符串

原文:https://www.geeksforgeeks.org/node-js-query-string/

查询字符串模块用于提供解析和格式化网址查询字符串的实用程序。它可以用来将查询字符串转换成 JSON 对象，反之亦然。

查询字符串是在问号(？).

要求模块:您可以使用以下代码包含该模块:

const querystring = require('querystring');

注意:不是全局对象，需要明确安装。 安装模块:

npm install querystring

示例 1: 使用解析():

java 描述语言

// Importing the models
import url from 'url'
import querystring from 'querystring'

// A URL is taken
let exampleUrl = 
'http://www.company.com:81/a/b/c.html?user=GEEKSFORGEEKS&year=2021#p2';

//Parse the whole URL
let parsed_Url = url.parse(exampleUrl);

// Parse only querystring.
let parsed_queryString = querystring.parse(parsed_Url.query);

// Print thr result.
console.log("This is parsed URL :",parsed_Url);

console.log("This is parsed Query String :",parsed_queryString);

输出:

This is parsed URL : Url {
  protocol: 'http:',
  slashes: true,
  auth: null,
  host: 'www.company.com:81',
  port: '81',
  hostname: 'www.company.com',
  hash: '#p2',
  search: '?user=GEEKSFORGEEKS&year=2021',
  query: 'user=GEEKSFORGEEKS&year=2021',
  pathname: '/a/b/c.html',
  path: '/a/b/c.html?user=GEEKSFORGEEKS&year=2021',
  href: 
'http://www.company.com:81/a/b/c.html?user=GEEKSFORGEEKS&year=2021#p2'
}
This is parsed Query String : [Object: null prototype] 
               { user: 'GEEKSFORGEEKS', year: '2021' }

例 2: 使用弦():T5】

java 描述语言

// Importing the model
import querystring from 'querystring'

// Specify the  object 
// to be serialized 
const q2=querystring.stringify({
                            name:'Testing',
                            company:'GeeksforGeeks',
                            content:'Article',
                            date:'9thMarch2021'
                           });  

// Print the result.
console.log(q2);

输出:

name=Testing&company=GeeksforGeeks&
content=Article&date=9thMarch2021

参考:https://nodejs . org/API/query string . html

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