I am currently working on designing my website and I need a way to automatically redirect users to an error page when they enter an incorrect URL. How can

As I am in the process of creating an ecommerce platform for testing, one key aspect that I want to address is ensuring that any page not found in my database automatically directs users to an error page. This way, even if they encounter a dead end, they can still explore other areas of the site and engage in different activities.

In the backend of my system, I have an error file that controls this functionality. However, I'm looking for guidance on how to modify it to achieve the desired outcome using vanilla JavaScript.

const express = require('express');
const app = express();

app.post('/submit-form', (req, res) => {
    if (!isValid(req.body)) {
        res.redirect('/error');
    } else {
        res.send('Form submitted successfully!');
    }
});

app.get('/error', (req, res) => {
    res.sendFile(__dirname + '/public/error.html');`your text`
});
app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

Answer №1

If you encounter users attempting to access non-existent pages in your database, one solution is to implement the wildcard route (*) along with middleware. Below is a customized middleware code snippet utilizing the wildcard route:

app.use((req, res, next) => {
// Check if the requested page exists in the database
if (!isPageInDatabase(req.url)) {
    res.redirect('/error');
} else {
    next(); 
}

});

This middleware will catch all requests and verify whether the requested page is present in the database. If not found, it will redirect the user to the error page.

For form submission scenarios, ensure that the form action is correctly set to /submit-form. Should an error occur during submission, the current code should effectively redirect the user to the error page. Double-check to confirm that the form action is accurate; adjustments may be necessary if it differs from the expected value.

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