take user input from console in nodejs iteratively?

Question

How to take input from console in a loop ?

Let us suppose node promt asks how many students are in a class? after this user enter 5, then there should be a promt asking 5 times "enter their name one by one", and all name has to be stored in an array

Answer 1

You can do something like this with the readline-sync package

 var readline = require('readline-sync');

    let num = readline.question("how many students are in a class ?");
    let names=[];
    for(let i=0;i<=num;i++)
    {
      let name = readline.question("Enter Name?");
      names.push(name);
    }
    console.log(names);

Working repl- https://repl.it/repls/LightyellowEvenBusinesses

Answer 2

Try this

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

let n;
let array = []

function mainfunction() {
    if( n == array.length){
        console.log("your output: ",  array)
        rl.close()
    }
    else{
        rl.question('enter student name one by one \n', (name) => {
            array.push(name)
            mainfunction()
        })
    }
 }

rl.question('enter the number of students ', (answer) => {
    n = answer
    mainfunction()
});