HTML | dialog open Attribute

The HTML <dialog> open Attribute is used to specify whether the dialog box should be open or not. It is new in HTML5. It is a Boolean Attribute.
If open, it means the user can interact with it.

Syntax:

<dialog open>

Attribute Values: It accepts two values i.e. true|false which specifies whether a dialog window should be open or not. By default, it is false.



  • true:It states that the dialog window is open.
  • false: It states that the dialog window is not open.

Example:

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code

<!DOCTYPE html>
<html>
  
<head>
    <style>
        body {
            text-align: center;
        }
    </style>
</head>
  
<body>
    <h1>
    GeeksForGeeks
</h1>
    <h3>
     HTML Dialog open Attribute
     </h3>
  
    <dialog id="Dialog"
            style="color:green"
            open>
        Welcome to GeeksforGeeks
  </dialog>
</body>
  
</html>

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Output:

Supported Browsers: The browsers supported by HTML <dialog> open Attribute are listed below:

  • Google Chrome
  • Firefox
  • Apple Safari
  • Opera


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