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<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>