How to Create a Pre-Filled forms in Node.js ?

Difficulty Level : Hard
Last Updated : 13 May, 2020

Pre-Filled forms are those forms that are already filled with desired data. These are helpful when a user wants to update something like his profile, etc.

We just create a folder and add a file, for example, index.js. To run this file you need to run the following command.

node index.js

Filename: SampleForm.ejs

<!DOCTYPE html>
<html>
  
<head>
    <title>Pre-Filled Form Demo</title>
</head>
  
<body>
    <h1>Update User</h1>
  
    <form action="saveData" method="POST">
        <pre>
            Email    : <input type="text" name="email"
                        value='<%=user.email%>'> <br>
  
            Name     : <input type="text" name="name"
                        value='<%=user.name%>'> <br>
  
            Number   : <input type="number" name="mobile"
                        value='<%=user.mobile%>'> <br>
  
            Address : <input type="text" name="address"
                        value='<%=user.address%>'> <br>
  
            <input type="submit" value="Submit Form"> 
        </pre>
    </form>
</body>
  
</html>

Filename: index.js

const express = require("express")
const path = require('path')
const app = express()
   
var PORT = process.env.port || 3000
  
// View Engine Setup
app.set("views", path.join(__dirname))
app.set("view engine", "ejs")
  
app.get("/", function(req, res){
      
    // Sample date to be filled in form
    var user = {
        email: 'test@gmail.com',
        name: 'Gourav',
        mobile: 9999999999,
        address: 'ABC Colony, House 23, India'
    }
  
    res.render("SampleForm",
        {
            user: user
        }
    );
})
   
app.listen(PORT, function(error){
    if(error) throw error
    console.log("Server created Successfully on PORT", PORT)
})

Steps to run the program:

The project structure will look like this:
Make sure you have installed ‘view engine’ like I have used “ejs” and also installed express module using following commands:
```
npm install express
npm install ejs
```
Run index.js file using below command:
```
node index.js
```
Now Open browser and type this URL:
```
http://localhost:3000/
```
Then you will see the Pre-Filled Update User Form as shown below:

So this is how you can create your own Pre-Filled forms.

My Personal Notes

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