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Node.js prompt.get() Method

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  • Difficulty Level : Hard
  • Last Updated : 15 Oct, 2020

The prompt.get() method is an asynchronous function. This method takes strings representing property names in addition to objects for complex property validation (and more). This function is used for I/O operations.

Syntax:

prompt.get([object]/[properties name], callbackfunction)

Parameters: This method takes two parameters as shown below:

  1. [object]/[properties name]: This parameter holds the property of the input value or predefined object.
  2. callbackfunction: This parameter holds the callback function to make this function an asynchronous function.

Installation Module:

  1. You can visit the link to Install this module. You can install this package by using this command.

    npm install prompt
    
  2. After that, you can just create a folder and add a file for example, index.js. To run this file you need to run the following command.

    node index.js
    

Filename: Index.js




var prompt = require('prompt');
  
// Function call
prompt.start();
    
// Reading two properties from user ie. name & class
prompt.get(['Name', 'class'], function (err, result) {
      
  // Printing the result
  console.log('Command-line input received:');
  console.log('Name: ' + result.name);
  console.log('class: ' + result.class);
})


Project Structure:

Run the index.js file using the following command:

node index.js

Output:

prompt: name: some-user
prompt: class: 12th
Command-line input received:
name: some-user
class: 12th
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