一、url.parse（url，true，true）利用WHATWG API解析一个URL字符串:

url.parse('http://www.abc.com/index/abc/index.html?search=123&bach=1234#hash')

生成

Url {

protocol: 'http:',

slashes: true,

auth: null,

host: 'www.abc.com',

port: null,

hostname: 'www.abc.com',

hash: '#hash',

search: '?search=123&bach=1234',

query: 'search=123&bach=1234',

pathname: '/index/abc/index.html',

path: '/index/abc/index.html?search=123&bach=1234',

href: 'http://www.abc.com/index/abc/index.html?search=123&bach=1234#hash' }

url.parse('//www.abc.com/index/abc/index.html?search=123&bach=1234#hash')

生成

Url {

protocol: null,

slashes: null,

auth: null,

host: null,

port: null,

hostname: null,

hash: '#hash',

search: '?search=123&bach=1234',

query: 'search=123&bach=1234',

pathname: '//www.abc.com/index/abc/index.html',

path: '//www.abc.com/index/abc/index.html?search=123&bach=1234',

href: '//www.abc.com/index/abc/index.html?search=123&bach=1234#hash' }

url.parse('//www.abc.com/index/abc/index.html?search=123&bach=1234#hash',true,true)

Url {

protocol: null,

slashes: true,

auth: null,

host: 'www.abc.com',

port: null,

hostname: 'www.abc.com',

hash: '#hash',

search: '?search=123&bach=1234',

query: { search: '123', bach: '1234' },

pathname: '/index/abc/index.html',

path: '/index/abc/index.html?search=123&bach=1234',

href: '//www.abc.com/index/abc/index.html?search=123&bach=1234#hash' }

二、url.format({})返回一个WHATWG URL对象的可自定义序列化的URL字符串表达。

url.format({

   protocol: 'http:',

   slashes: true,

   auth: null,

   host: 'www.imooc.com',

   port: null,

   hostname: 'www.imooc.com',

 hash: '#333',

   search: '?from=scott&course=123',

   query: 'from=scott&course=123',

   pathname: '/video/6710',

   path: '/video/6710?from=scott&course=123',

   href: 'http://www.imooc.com/video/6710?from=scott&course=123#333' })

生成

http://www.imooc.com/video/6710?from=scott&course=123#333

三、url.resolve(from, to)Web 浏览器解析超链接的方式把一个目标 URL 解析成相对于一个基础 URL。

url.resolve('http://abc/123/', '/four/456')

生成

'http://abc/four/456'