Kevin Powell - Community•4mo ago

trouble using express.js

i have a js file that im using express.js code using the nodemailer module. What im trying to do is have a user enter their details in a form and when they press a button i receive details that they entered as an email, but i dont seem to understand what the problem is. in my browser im getting this error

Uncaught ReferenceError: require is not defined
    at app.js:1:20

Uncaught ReferenceError: require is not defined
    at app.js:1:20

i did some searching and it said the browser cannot understand node.js files or something like that, Does anyone know what the actua problem is

8 Replies

missymae•4mo ago

It looks like an error in the syntax you used to import something in the first line of your app. If you share the first line the problem might be there.

greenleaf02•4mo ago

this is the js

const nodemailer = require("nodemailer");
const bodyParser=require('body-parser');
const express=require('express')

const app=express()
app.use('/submit-form',bodyParser.urlencoded({extended:false}))
app.post('/submit-form', (req,res)=>{
    const {firstName,lastName, sessionDate, subject}=req.body
    const transporter=nodemailer.createTransport(
        {
            service: 'gmail',
            host: "smtp.gmail.email",
            port: 587,
            secure: false, 
            auth: {
                user: "",
                pass: "",
            },
        }
    )
    const emailMessage={
        from:'',
        to:'',
        subject: "Hello ✔", 
        text: "Hello world?", 
        html: "<b>Hello world?</b>",
    }
    transporter.sendMail(emailMessage, (error,info)=>{
        if(error){
            console.log('Error sending email:', error);
            res.status(500).send('Error sending email');
        }else {
            console.log('Email sent:', info.response);
            res.send('Email sent successfully');
        }
    })
})




app.listen(3000, () => {
    console.log('Server is running on http://localhost:3000');
});

const nodemailer = require("nodemailer");
const bodyParser=require('body-parser');
const express=require('express')

const app=express()
app.use('/submit-form',bodyParser.urlencoded({extended:false}))
app.post('/submit-form', (req,res)=>{
    const {firstName,lastName, sessionDate, subject}=req.body
    const transporter=nodemailer.createTransport(
        {
            service: 'gmail',
            host: "smtp.gmail.email",
            port: 587,
            secure: false, 
            auth: {
                user: "",
                pass: "",
            },
        }
    )
    const emailMessage={
        from:'',
        to:'',
        subject: "Hello ✔", 
        text: "Hello world?", 
        html: "<b>Hello world?</b>",
    }
    transporter.sendMail(emailMessage, (error,info)=>{
        if(error){
            console.log('Error sending email:', error);
            res.status(500).send('Error sending email');
        }else {
            console.log('Email sent:', info.response);
            res.send('Email sent successfully');
        }
    })
})




app.listen(3000, () => {
    console.log('Server is running on http://localhost:3000');
});

Aoi•4mo ago

Can I get your package.json?

greenleaf02•4mo ago

{
  "name": "jolly-genius",
  "version": "1.0.0",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node app.js" 

  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "description": "",
  "dependencies": {
    "express": "^4.19.2",
    "nodemailer": "^6.9.13"
  }
}

{
  "name": "jolly-genius",
  "version": "1.0.0",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node app.js" 

  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "description": "",
  "dependencies": {
    "express": "^4.19.2",
    "nodemailer": "^6.9.13"
  }
}

glutonium•3mo ago

try using es modules instead check how to use es modules in nodejs

Aoi•3mo ago

In your original question, I am confused about what you mean by error in your browser. You are supposed to use node in a terminal to run this script and not a browser Browser doesn't support require statements

AtulAO•3mo ago

Hi do you mind sharing your front-end code for this page.

Ken•3mo ago

How are you executing js file? What is its name? Your package.json file hints at a file named app.js If so, in your terminal (not a web browser) either of the following should start your express js server: node app.js …OR… npm run start if you get a “module not found “ error. Trying running’npm install’ first Once the server is running , then you can invoke your web server endpoint POST http://localhost:3000/aubmit-form

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trouble using express.js