cheerio
https://cheerio.js.org/
Fast, flexible, and lean implementation of core jQuery designed specifically for the server.
Features
❤ Familiar syntax: Cheerio implements a subset of core jQuery. Cheerio removes all the DOM inconsistencies and browser cruft from the jQuery library, revealing its truly gorgeous API.
ϟ Blazingly fast: Cheerio works with a very simple, consistent DOM model. As a result parsing, manipulating, and rendering are incredibly efficient.
❁ Incredibly flexible: Cheerio wraps around @FB55’s forgiving htmlparser2. Cheerio can parse nearly any HTML or XML document.
例子
const cheerio = require('cheerio'); const $ = cheerio.load('<ul id="fruits">...</ul>');$('.apple', '#fruits').text() //=> Apple $('ul .pear').attr('class') //=> pear $('li[class=orange]').html() //=> Orange
用处
可以用作服务器端的网页爬虫， 解析前端的静态页面。
因为一般页面的主页都使用静态页面， 来提高SEO， 和首屏的页面相应度。使用这种工具正好可以应对， 静态页面解析， 提取有用数据。
还可以处理静态页面， 给静态页面添加一些页面元素，或者脚本， 在代理的角色中，对往来网页做修改。
其它
Cheerio is not a web browser
Cheerio parses markup and provides an API for traversing/manipulating the resulting data structure. It does not interpret the result as a web browser does. Specifically, it does not produce a visual rendering, apply CSS, load external resources, or execute JavaScript. If your use case requires any of this functionality, you should consider projects like PhantomJS or JSDom.