I want to know how can I compare values received from user input with values stored into file.txt in Node.js.
update : I do not need to store passwords in plain text. The text file is used only for validation of the admin credentials. This meaning that The credentials are changeable through the text file and the admin has to know the credentials in order to log in. It may not make sense but it is for learning purposes.
For your learning purpose, simply compare strings. If your userInputPassword is in plain text and password stored in admin.txt is hashed, then you have to decrypt your password in admin.txt before comparing.
const fs = require('fs');
const readline = require('readline').createInterface({
input: process.stdin,
output: process.stdout
});
const read = fs.readFileSync('admin.txt', 'utf8');
console.log(read);
readline.question(`What's your email? `, (email) => {
const userInputEmail = email.trim();
console.log(`Email: ${email}`)
readline.question(`What's your password? `, (password) => {
const userInputPassword = password.trim();
console.log(`Password: ${password}`);
const [correctEmail, correctPassword] = read.split('\n').map(s => s.trim());
if (userInputEmail === correctEmail && userInputPassword === correctPassword) console.log('Logged in');
else console.log('Email or password is incorrect');
readline.close();
});
});
[email protected]and the passwordadmin. And the answer from Nguyễn Việt Đức that you said was "Awesome" reads the password out of the file in plain text. You're right that so far it does not make sense to me.