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JavaScript 经典实例:第三版
book

JavaScript 经典实例:第三版

by Adam D. Scott, Matthew MacDonald, Shelley Powers
September 2022
Intermediate to advanced
585 pages
8h 17m
Chinese
China Electric Power Press Ltd.
Content preview from JavaScript 经典实例:第三版
520
20
远程数据
数据无处不在。日常生活中,我们每天都会创建并与数据交互,有时是有意为之,
而有时则在不经意之间。
Node
应用通常都要与数据交互。有些时候,数据是由我们
自己创建的,还有些时候,数据是由用户输入的。此外,我们也经常需要与应用外
部的数据交互。本章介绍在
Node
应用中处理远程数据的最佳实践和技术。
20.1
获取远程数据
20.1.1
问题
你想在
Node
应用中请求远程服务器。
20.1.2
方案
使用
node-fetch
模块。这个模块非常流行,使用广泛,把浏览器的
window.fetch
带到
Node
中。该模块使用
npm
安装。
$ npm install node-fetch
用法简单,如下所示。
const
fetch = require('node-fetch');
远程数据
521
fetch('https://oreilly.com')
.then(res => res.text())
.then(body => console.log(body));
20.1.3
讨论
node-fetch
提供的
API
与浏览器中的
window.fetch
本一致。
Node
程序可以使用
它访问远程资源。与
window.fetch
一样
node-fetch
模块也支持
GET
POST
DELETE
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Publisher Resources

ISBN: 9787519869601