node. url Module for js Getting Started

Preface

Today's main record is about node. js inside a simple module, url module. This url module needs to be introduced first if it is to be used. If you only use the module url on the command line, such as cmd, git, bash, etc., you don't need require to come in. Just use it directly.

Introducing module

var url = require('url');

1. url.parse()

/* url.parse(urlString[,parseQueryString[,slashesDenoteHost]])
 * urlString <string> The URL to be resolved 
 * parseQueryString <boolean>  Default to false , will query Analyze into 1 Strings; How to set to true Will the query Analyze into 1 Objects 
 * @return <object>
 */
var result = url.parse('https://www.baidu.com/s?ie=UTF-8&wd=node.js')
console.log(result);
//  Print results 
{
 protocol: 'https:', // url Agreement 
 slashes: true, //  Slant line '/'
 auth: null, //  User authentication 
 host: 'www.baidu.com', //  Host 
 port: null, //  Port 
 hostname: 'www.baidu.com', //  Hostname 
 hash: null, // hash  Value 
 search: '?ie=UTF-8&wd=node.js', // url Query information in, including '?'
 query: 'ie=UTF-8&wd=node.js', // url Query information in, excluding '?'
 pathname: '/s', //  Follow host The entire file path after 
 path: '/s?ie=UTF-8&wd=node.js', // pathname And search
 href: 'https://www.baidu.com/s?ie=UTF-8&wd=node.js' //  Element url
}

2. url.format(urlObject)

The format method, as opposed to the parse method, is used to generate an url from an object

var urlObj = {
 protocol:'http',
 host:'www.baidu.com',
 pathname:'/page',
 search:'?index=1&sign=true'
}
var urlStr = url.format(urlObj);
console.log(urlStr);
//  Print results 
// http://www.baidu.com/page?index=1&sign=true

3. url.resolve(from,to)

Used to splice url

var urlStr = url.resolve('http://www.baidu.com/','page');
console.log(urlStr);
//  Print results 
// http://www.baidu.com/page

var urlStr1 = url.resolve('/page/person/','pic');
console.log(urlStr1);
//  Print results 
// /page/person/pic

Summarize