ReferenceError: index is not defined (Node.js, Express.js)

Question

我基本上是在尝试使用 express 和 hbs 来动态呈现页面。我还包含了必要的 npm 包。我还在视图目录中创建了 index.hbs，但是当我尝试运行我的代码时，出现以下错误。

ReferenceError: index is not defined
    at C:\Users\Moaz\Desktop\Node JS Code\web-server\src\app.js:11:14
    at Layer.handle [as handle_request] (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\layer.js:95:5)
    at C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\index.js:335:12)
    at next (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\express\lib\router\index.js:275:10)
    at SendStream.error (C:\Users\Moaz\Desktop\Node JS Code\web-server\node_modules\serve-static\index.js:121:7)
    at SendStream.emit (node:events:376:20)

app.js代码：-

const path = require("path");
const express = require("express");

const app = express();
const publicDirectoryPath = path.join(__dirname, "../public");

app.set("view engine", "hbs");
app.use(express.static(publicDirectoryPath));

app.get("", (req, res) => {
  res.render(index);
});

app.listen(3000, () => {
  console.log("Service is up and running successfully!");
});

VS Code目录截图：-

Answer 1

你把index写成一个变量。

将其设置为字符串:

app.get("*", (req, res) => {
  res.render('index');
});

Answer 2

您正在渲染索引页面错误，您需要将字符串传递给渲染函数，请在第 11 行尝试 res.render('index');。

其次，我错了，将 views 文件夹放在 src 文件夹中，运行应用程序。或者根据 web-server/views/

调整你的路径

ReferenceError: index is not defined (Node.js, Express.js)

ReferenceError: index is not defined (Node.js, Express.js)

handler

node.js

express