What is HTML open Attribute

Definition and Usage

The open attribute is a boolean attribute.

When present, it specifies that the details should be visible (open) by default.

Applies to

The open attribute can be used on the following element:

Element	Attribute
<details>	open

Browser Support

The numbers in the table specify the first browser version that fully supports the attribute.

How to use An open/visible <details> element - HTML open Attribute

This example demonstrates a details element that is open by default.

index.html

Example: HTML

<!DOCTYPE html>
<html>
<body>

<h1>The details open attribute</h1>

<details open>
  <summary>Epcot Center</summary>
  <p>Epcot is a theme park at Walt Disney World Resort featuring exciting attractions, international pavilions, award-winning fireworks and seasonal special events.</p>
</details>

<p>This example demonstrates a details element that is open by default.</p>

</body>
</html>

Output should be:

html open attribute

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Single Articles

How to use An open/visible <details> element - HTML open Attribute

HTML Attribute

Read Full:	HTML Attribute
Type:	Develop
Category:	Web Tutorial
Sub Category:	HTML Attribute
Uploaded by:	Admin
Views:	43

Reffered: https://www.w3schools.com/tags/att_open.asp