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HTML5: How to enable an extra set of restrictions for the content in an iframe element?

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Solution:

HTML Code:

<!DOCTYPE html><!-- Declaration specifying the document type -->
<html><!-- Opening tag for the root element of the HTML document -->
<head><!-- Opening tag for the document's header section -->
<meta charset="utf-8"><!-- Metadata tag specifying the character encoding of the document -->
<title>How to enable an extra set of restrictions for the content in an iframe element</title><!-- Title of the HTML document -->
</head><!-- Closing tag for the document's header section -->
<body><!-- Opening tag for the document's body section -->
<iframe src="https://www.w3resource.com/html-css-exercise/basic/solution/iframe-sandbox.html" sandbox><!-- Inline frame element displaying content from an external source with sandbox attribute enabled -->
</iframe><!-- Closing tag for the iframe element -->
</body><!-- Closing tag for the document's body section -->
</html><!-- Closing tag for the root element of the HTML document -->

Explanation:

  • This HTML code demonstrates how to enable an extra set of restrictions for the content within an iframe element using the sandbox attribute.
  • The <iframe> element is used to embed content from another HTML document or website. In this case, its src attribute specifies the URL of the external content.
  • The sandbox attribute is added to the iframe element without a value, which enables a default set of restrictions for the content within the iframe.
  • These restrictions include preventing scripts, forms, and other potentially harmful content from executing or affecting the parent document.
  • The content within the iframe will be rendered in a restricted environment, providing an extra layer of security against potential security vulnerabilities.

Live Demo :

See the Pen iframe-sandbox-answer by w3resource (@w3resource) on CodePen.


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https://www.w3resource.com/html-css-exercise/basic/iframe-sandbox-answer.php