节点 |要求未定义

问题描述

使用 webpack 解决的问题

为了API的需要，我需要导入MD5和moment.我使用基本的 npm install 下载了包，但是当我尝试使用下面的代码将它导入到我的 app.js 上时:

const md5 = require('./node_modules/md5/md5.js');const moment = require('./node_modules/moment/moment.js');函数getTimeStamp(){return moment.utc().format('YYYYMMDDHHmmss');}让时间戳 = getTimeStamp();函数 generateSignature(devId、方法、authKey、时间戳){返回 md5 (`${devId}${method}${apiKey}${timestamp}`);}let signature = generateSignature(XXXX, "createsession", "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", getTimeStamp());

我在控制台中收到此消息:

Uncaught ReferenceError: require is not defined

我不知道我做错了什么，因为我在另一个程序中使用了相同的方法，并且效果很好......

提前致谢

解决方案

您可能会看到此错误，因为 require() 在浏览器/客户端 JavaScript 中不存在.如果你想在浏览器中使用 require() ，那么你需要使用类似 require.js

RequireJS 是一个 JavaScript 文件和模块加载器.它针对在浏览器中使用，但可以在其他 JavaScript 环境中使用，比如 Rhino 和 Node.

PS:我同意 cptwonton.请参阅上述帖子以获取具有各种可用选项的深入解决方案.

Edit : Problem solved using webpack

For the needs of an API, I needed to import MD5 and moment. I downloaded the packages using the basic npm install but when I try to import it on my app.js using the code below :

const md5 = require ('./node_modules/md5/md5.js');
const moment = require ('./node_modules/moment/moment.js');

function getTimeStamp () {
    return moment.utc ().format ('YYYYMMDDHHmmss');
}
let timestamp = getTimeStamp ();

function generateSignature (devId, method, authKey, timestamp) {
    return md5 (`${devId}${method}${apiKey}${timestamp}`);
}
let signature = generateSignature (XXXX, "createsession", "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", getTimeStamp ());

I get this message in the console :

Uncaught ReferenceError: require is not defined

I don't know what I'm doing wrong because I used the same method for another program and it worked perfectly...

Thanks in advance

解决方案

You're probably seeing this error because require() does not exist in the browser/client-side JavaScript.If you want to use require() in the browser, then you need to use something like require.js

PS: I agree with cptwonton. Please refer to the mentioned post for an in-depth solution with the various options available.

这篇关于节点 |要求未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！