Defaults to an empty string if not specified. challengeĪ challenge string that is submitted along with the public key. Only one form element in a document can have the autofocus attribute, which is a Boolean. This Boolean attribute lets you specify that the control should have input focus when the page loads, unless the user overrides it, for example by typing in a different control. This element includes the global attributes. Must have a start tag and must not have an end tag. Resettable form-associated element, palpable content. It is expected that the element will be used in an HTML form along with other information needed to construct a certificate request, and that the result of the process will be a signed certificate. This mechanism is designed for use with Web-based certificate management systems. The HTML element exists to facilitate generation of key material, and submission of the public key as part of an HTML form. Be aware that this feature may cease to work at any time. Avoid using it, and update existing code if possible see the compatibility table at the bottom of this page to guide your decision. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Allowing cross-origin use of images and canvasĭeprecated: This feature is no longer recommended.HTML table advanced features and accessibility.From object to iframe - other embedding technologies.Assessment: Structuring a page of content.
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