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URL模块用于对URL的解析,常用的是url.parse方法。
假设有一个url为https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4,可以用url.parse方法进行解析。
示例代码:/lesson13/url.js
const url = require('url') const str = 'https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4' console.log(url.parse(str))
打印结果如下:
Url { protocol: 'https:', slashes: true, auth: null, host: 'www.google.com:8080', port: '8080', hostname: 'www.google.com', hash: null, search: '?x=1&y=2&y=3&y=4', query: 'x=1&y=2&y=3&y=4', pathname: '/a/b', path: '/a/b?x=1&y=2&y=3&y=4', href: 'https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4' }
可以看到url的信息如端口号、域名、query参数等都被解析出来了。
如果需要将query参数转为对象,则可以为url.parse函数的第二个参数传true,如console.log(url.parse(str, true)),打印结果如下:
Url { protocol: 'https:', slashes: true, auth: null, host: 'www.google.com:8080', port: '8080', hostname: 'www.google.com', hash: null, search: '?x=1&y=2&y=3&y=4', query: [Object: null prototype] { x: '1', y: [ '2', '3', '4' ] }, pathname: '/a/b', path: '/a/b?x=1&y=2&y=3&y=4', href: 'https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4' }
同时可以看到y=2&y=3&y=4参数被解析为了y: [ '2', '3', '4' ]。
除了用url.parse方法解析url,还可以通过构造函数URL,创建一个实例,其中带有解析后的数据。
实例有一个toString方法,可以将实例解析为字符串url。
代码如下:
const { URL } = require('url') const urlObj = new URL(str) console.log(urlObj) console.log(urlObj.toString())
打印结果为:
URL { href: 'https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4', origin: 'https://www.google.com:8080', protocol: 'https:', username: '', password: '', host: 'www.google.com:8080', hostname: 'www.google.com', port: '8080', pathname: '/a/b', search: '?x=1&y=2&y=3&y=4', searchParams: URLSearchParams { 'x' => '1', 'y' => '2', 'y' => '3', 'y' => '4' }, hash: '' } https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4 // toString方法解析出的url
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阅读更多系列文章请访问我的GitHub博客,示例代码请访问这里。
url.parse
URL模块用于对URL的解析,常用的是url.parse方法。
假设有一个url为https://www.google.com:8080/a/b?x=1&y=2&y=3&y=4,可以用url.parse方法进行解析。
打印结果如下:
可以看到url的信息如端口号、域名、query参数等都被解析出来了。
如果需要将query参数转为对象,则可以为url.parse函数的第二个参数传true,如console.log(url.parse(str, true)),打印结果如下:
同时可以看到y=2&y=3&y=4参数被解析为了y: [ '2', '3', '4' ]。
new URL()
除了用url.parse方法解析url,还可以通过构造函数URL,创建一个实例,其中带有解析后的数据。
实例有一个toString方法,可以将实例解析为字符串url。
代码如下:
打印结果为:
The text was updated successfully, but these errors were encountered: