Skip to content

JavaScript prompt for input | Example code

  • by

Use the JavaScript prompt() method to show the prompt for input on the web page. The prompt() method instructs the web browser to display a dialog with a text, text input field, and two buttons OK and Cancel.

let input = prompt(message, default);

The prompt() is a method of the window object.

JavaScript prompt for input

Simple example code to enter some text in prompat input box by the user and submits or cancels it.

<!DOCTYPE html>

   let lang = prompt('Favorite programming language?');




JavaScript prompt for input

Convert a user input to a number

The result of the prompt() is a string. If you want to get the answer as a number, you should always cast the string into a number.

   let ageStr = prompt('How old are you?');
   let age = Number(ageStr);

   let feedback = age >= 16 ?
   'Eligible.' : 'You must be at least 16 year';


Do comment if you have any doubts or suggestions on this Js prompt topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version

Leave a Reply

Your email address will not be published. Required fields are marked *