CODEWITHSUNDEEP
javascriptnode.jsloopsreadline
Alex K
Alex K

Reputation: 83

read user input N times from console node js

I'm trying to get an input from a user to a console in node js a finite number of times, and run a function on each input. while or for loop doesn't work.

any help?

here is my code (litle simplified):

function foo(num)
{
 console.log(num)
}

function ReadUseInput()
{
 const readline = require('readline').createInterface({
     input: process.stdin,
    output: process.stdout
   }); 
    readline.question('Enter number...', num => 
  {
         foo(num)
       readline.close();
     });
}

//for (var i = 0; i < 10; i++)// this line isnt working - shows warning: MaxListenersExceededWarning: Possible EventEmitter memory leak detected
ReadUseInput()

Upvotes: 1

Views: 746

Answers (1)

theusaf
theusaf

Reputation: 1802

One solution could be to make the ReadUseInput() function take a number and decrement it to repeat a certain number of times:

function foo(num) {
 console.log(num)
}

function ReadUseInput(timesLeft) {
  // exit condition
  if(timesLeft <= 0) {
    return;
  }
  const readline = require('readline').createInterface({
    input: process.stdin,
    output: process.stdout
  }); 
  readline.question('Enter number...', num => {
    foo(num)
    readline.close();
    ReadUseInput(--timesLeft);
  });
}

ReadUseInput(10);

Upvotes: 1

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