What is the process for integrating CSS and JS into my Express Node localhost server?

I've been struggling to load a basic webpage, only seeing the HTML structure with CSS and JS errors popping up in the console. Here's my index.js code snippet. I attempted using Express static middleware and even tried fetching CSS and JS files separately using app.get, but no luck.

const express = require('express');
const fs = require('fs');
const app = express();
app.use(express.static("my-website"));
app.get('/', (request, response) => {
    fs.readFile('./html/frontpage.html', 'utf8', (err, html) => {
        if(err){
            response.status(500).send('sorry, out of order')
        }
        response.send(html);
    })
})
app.listen(process.env.PORT || 3000, () => console.log('App available on http://localhost:3000'));

Answer №1

app.get("/", (req, res) => {
  let content = `  <html>
  <head>
    <link rel="stylesheet" href="/styles.css"> // ensure that express automatically searches in the designated static path
  </head>
  <header> 
  <div class="header">
  <ul>
   <li>
<a href="https://webpage address"> 
 
   </li>
  </ul>
  </div>
  </header>
  <body>
    <section>
    <div>
    <h2>Desired Outcome of My Course</h2>
      <p>This api is configured for </p>
    </div>       
    </section>   
   <script src="/script.js" ></script>  // 
  </body>
</html>`;

  res.send(`${content}`);
});

Ensure that the styles.css and script.js files are stored within the specified static folder location.

Answer №2

To allow our server to serve static files like CSS and images, we utilize a specific function in Express known as "static". This requires us to include app.use(express.static()), and within the parentheses, specify the name of a folder that will act as our static directory, for example, the "public" folder. Within the public folder, create subfolders such as css, Images, etc., and place corresponding files like styles.css in the css folder, and img.png in the Images folder. https://i.stack.imgur.com/biXWV.png

If the CSS file fails to load with an error message stating: "Refused to apply style from 'http://localhost:3000/styles.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.", you can resolve this by adding the following code snippets in your JS and HTML files respectively:

app.get("/", function(req, res){
  app.use(express.static("public"));
  res.sendFile(__dirname + "/index.html");
})

In your HTML file:

<link href="css/styles.css" type="text/css"  rel="stylesheet">

Answer №3

If you want to streamline your workflow, consider using a templating engine like pug (), ejs (), or handlebars. These tools can assist in organizing headers and easily integrating CSS into your files.

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