What is HTML sandbox Attribute

Definition and Usage

The sandbox attribute enables an extra set of restrictions for the content in an iframe.

When the sandbox attribute is present, and it will:

treat the content as being from a unique origin
block form submission
block script execution
disable APIs
prevent links from targeting other browsing contexts
prevent content from using plugins (through <embed>, <object>, <applet>, or other)
prevent the content to navigate its top-level browsing context
block automatically triggered features (such as automatically playing a video or automatically focusing a form control)

The value of the sandbox attribute can either be just sandbox (then all restrictions are applied), or a space-separated list of pre-defined values that will REMOVE the particular restrictions.

Browser Support

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

How to add An <iframe> with extra restrictions - HTML sandbox Attribute

The "Get date and time" button will run a script in the inline frame. Since the sandbox attribute is set, the content of the inline frame is not allowed to run scripts. You can add "allow-scripts" to the sandbox attribute, to allow the JavaScript to run.

index.html

Example: HTML

<!DOCTYPE html>
<html>
<body>

<h1>The iframe sandbox attribute</h1>

<iframe src="demo_iframe_sandbox.htm" sandbox>
  <p>Your browser does not support iframes.</p>
</iframe>

<p>The "Get date and time" button will run a script in the inline frame.</p>
<p>Since the sandbox attribute is set, the content of the inline frame is not allowed to run scripts.</p>
<p>You can add "allow-scripts" to the sandbox attribute, to allow the JavaScript to run.</p>

</body>
</html>

Output should be:

html sandbox attribute

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Single Articles

How to add An <iframe> with extra restrictions - HTML sandbox Attribute

HTML Attribute

Read Full:	HTML Attribute
Type:	Develop
Category:	Web Tutorial
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Reffered: https://www.w3schools.com/tags/att_sandbox.asp