Javascript | Window prompt() Method

The prompt() method is used to display a dialog with an optional message prompting the user to input some text. It is often used if the user wants to input a value before entering a page.
It returns a string containing the text entered by the user, or null.

Syntax:

prompt(message, default)
  • message is a string of text to display to the user.It can be omitted if there is nothing to show in the prompt window i.e. it is optional.
  • default is a string containing the default value displayed in the text input field. It is also optional.

Example:



filter_none

edit
close

play_arrow

link
brightness_4
code

<!DOCTYPE html>
<html>
  
<head>
    <title>
        Window prompt() Method
    </title>
</head>
  
<body style="text-align: center;">
    <h1 style="color:green;">
        GeeksforGeeks
    </h1>
    <h2>
        Window prompt() Method
    </h2>
  
    <button onclick="geek()">
        Click me!
    </button>
    <p id="g"></p>
  
    <script>
        function geek() {
            var doc = prompt("Please enter some text",
                "GeeksforGeeks");
            if (doc != null) {
                document.getElementById("g").innerHTML =
                    "Welcome to " + doc;
            }
        }
    </script>
</body>
  
</html>

chevron_right






                        filter_none








Output:

Before clicking the button:

prompt


After clicking the Click me! button:

prompt


After pressing the OK button in dialog box:

prompt


Supported Browsers: The browser supported by window prompt() method are listed below:


    

  • Google Chrome
    • 

  • Internet Explorer 
    • 

  • Firefox
    • 

  • Opera 
    • 

  • Safari
    • 




          
          
          
          

            

    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
Vishal Chaudhary 2
Check out this Author's contributed articles.
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on  the "Improve Article" button below.


Improved By :  Vishal Chaudhary 2