📅 最后修改于: 2023-12-03 15:29:57.996000 🧑 作者: Mango
Cheerio is a fast, flexible, and lean implementation of core jQuery for the server-side. It provides an easy-to-use API for parsing and manipulating HTML and XML documents. Cheerio can be used with a variety of web scraping and data extraction tasks.
To install Cheerio, you can use npm:
npm install cheerio
Using Cheerio is similar to using jQuery on the client-side. You start by loading an HTML or XML document and then selecting the elements you want to manipulate. Here's an example:
const cheerio = require('cheerio');
const $ = cheerio.load('<html><body><h1>Hello World</h1></body></html>');
$('h1').text('Hello Cheerio!');
console.log($.html());
In this example, we're loading an HTML document and then changing the text of the h1 element to "Hello Cheerio!". We then print the modified document to the console.
Cheerio provides a powerful API for selecting and manipulating HTML and XML documents. Here are some of the most commonly used methods:
$('selector'): Select elements based on a CSS selector..html(): Get or set the HTML contents of the selected element(s)..text(): Get or set the text contents of the selected element(s)..attr(name, value): Get or set the attribute value of the selected element(s)..addClass(class): Add a class to the selected element(s)..removeClass(class): Remove a class from the selected element(s)..each(callback): Iterate over the selected element(s) and call a function for each one.Cheerio is a powerful and flexible tool for parsing and manipulating HTML and XML documents in Node.js. It provides a familiar API for those who are already familiar with jQuery, making it easy to get started. With its fast and efficient implementation, Cheerio is a great choice for web scraping and data extraction tasks.