【问题标题】:my javascript file not linking? Iam using: app.use(express.static(__dirname + '/public'));我的 javascript 文件没有链接?我正在使用:app.use(express.static(__dirname + '/public'));
【发布时间】:2021-12-09 10:01:06
【问题描述】:

我的文件结构:

  • 项目
    • 公开
      • javascript
        • char1.js
    • 查看次数
      • home.ejs
    • app.js

我将我的 ejs 存储在一个子文件夹中,我想访问另一个子文件夹中的 chart1.js 文件,

我正在使用 app.use(express.static(__dirname + '/public')); 中间件。 我已经陷入这个错误好几个小时了: 感谢您的帮助!!!!

homes.ejs 文件

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://fonts.googleapis.com/css2?family=Inconsolata:wght@300&display=swap" rel="stylesheet">
    <title>Home</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/5.0.0-alpha1/css/bootstrap.min.css"
        integrity="sha384-r4NyP46KrjDleawBgD5tp8Y7UzmLA05oM1iAEQ17CSuDqnUK2+k9luXQOfXJCJ4I" crossorigin="anonymous">
    <script src="https://cdn.jsdelivr.net/npm/bs-custom-file-input/dist/bs-custom-file-input.js"></script>
    <link rel="stylesheet" href="/stylesheets/app.css">
</head>
<body class=" ">
    <div id="chart1"></div>
         <button id="refresh2">Refresh this chart</button>
         <script src="/javascripts/chart1.js"></script>
    </div>
</body>

</html>

chart1.js 文件:

import ChartsEmbedSDK from '@mongodb-js/charts-embed-dom';
const sdk = new ChartsEmbedSDK({
    baseUrl: 'https://charts.mongodb.com/charts-project-0-qumgu'
});

const chart = sdk.createChart({
    chartId: '1e32b53f-6de2-45d2-863d-025b85c8bec9',
    weidth: 100,
    height: 100,
});
chart.render(document.getElementById('chart1'))

app.js 文件:

if (process.env.NODE_ENV !== "production") {
require('dotenv').config();
}

const express = require('express');
const path = require('path');
const mongoose = require('mongoose');
const Data = require('./models/data');

const dbUrl = process.env.DB_URL || 'mongodb://localhost:27017/predict-football';
mongoose.connect(dbUrl, {
    useNewUrlParser: true,
    useUnifiedTopology: true,


});

const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", () => {
    console.log("database connected")
})

const app = express();

app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));

app.use(express.urlencoded({ extended: true }))
app.use(express.static(__dirname + '/public'));


app.get('/home', async (req, res) => {
    const datas = await Data.find({}).sort({ _id: -1 });
    console.log(datas.length)
    res.render('home', { datas })

})
app.post('/home', async (req, res) => {
    const data = new Data(req.body.data);
    console.log(data)
    await data.save();
    res.redirect('/home')
})

    if (process.env.NODE_ENV !== "production") {
    require('dotenv').config();
}

const express = require('express');
const path = require('path');
const mongoose = require('mongoose');
const Data = require('./models/data');

const dbUrl = process.env.DB_URL || 'mongodb://localhost:27017/predict-football';
mongoose.connect(dbUrl, {
    useNewUrlParser: true,
    useUnifiedTopology: true,


});

const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", () => {
    console.log("database connected")
})

const app = express();

app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));

app.use(express.urlencoded({ extended: true }))
app.use(express.static(__dirname + '/public'));


app.get('/home', async (req, res) => {
    const datas = await Data.find({}).sort({ _id: -1 });
    console.log(datas.length)
    res.render('home', { datas })

})
app.post('/home', async (req, res) => {
    const data = new Data(req.body.data);
    console.log(data)
    await data.save();
    res.redirect('/home')
})

app.all('*', (req, res, nwxt) => {
    res.send("404!!!")
})

const port = process.env.PORT || 3000;
app.listen(port, () => {
    console.log(`serving on port ${port}`)
})

app.all('*', (req, res, nwxt) => {
    res.send("404!!!")
})

const port = process.env.PORT || 3000;
app.listen(port, () => {
    console.log(`serving on port ${port}`)
})

【问题讨论】:

    标签: javascript html express path absolute-path


    【解决方案1】:

    你必须替换:

    app.use(express.static(__dirname + '/public'));
    

    收件人:

    app.use(express.static('public'))
    

    并获得 chart1.js

    • 将 javascripts 文件夹重命名为 js

    这样的:

    <script src="../public/javascripts/chart1.js"></script>
    

    使用这个:

    <script src="/js/chart1.js"></script>
    

    【讨论】:

    • 我试过&lt;script src="/javascripts/chart1.js"&gt;&lt;/script&gt;
    • 它仍然无法正常工作,
    • 公用文件夹中的其他文件正在工作,但js文件不工作
    • 将文件夹 javascripts 重命名为 js 应该可以正常工作了。
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