node.js: readline: rl.question(query, callback)

rl.question(query, callback)

This method displays the query by writing it to the output, waits for user input to be provided on input, then invokes the callback function passing the provided input as the first argument.

Below table summarizes the arguments of question method.

Argument	Type	Description
query	string	A statement to write to output.
callback	Function	A callback function that is invoked with the user's input in response to the query.

Example

rl.question("What is your name ?", (name) => {

         console.log(`Hello ${name}, how are you`);

         rl.close();

});

Find the below working application.

HelloWorld.js

/* Import readline module */
var readline = require('readline');

/*
 * create a new readline.Interface instance that reads data from standard input
 * and write data to standard output
 */
var rl = readline.createInterface({
 input : process.stdin,
 output : process.stdout
});

rl.question("What is your name ?", (name) => {
 console.log(`Hello ${name}, how are you`);
 rl.close();
});

Output

What is your name ?Krishna
Hello Krishna, how are you

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