From object to iframe — other embedding technologies - Learn web development
e(); }); solution.addeventlistener('click', function() { if(solution.value === 'show solution') { textarea.value = solutionentry; solution.value = 'hide solution'; } else { textarea.value = userentry; solution.value = 'show solution'; } updatecode(); }); const htmlsolution = '<iframe width="420" height="315" src="https://www.youtube.com/embed/qh2-tgulwu4" frameborder="0" allowfullscreen>\n</iframe>\n\n<iframe src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d37995.65748333395!2d-2.273568166412784!3d53.473310471916975!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x487bae6c05743d3d%3a0xf82fddd1e49fc0a1!2sthe+lowry!5e0!3m2!1sen!2suk!4v1518171785211" width="600" height="450" frameborder="0" style="border:0" allowfullscreen>\n</iframe>'; let solutionentry = htmlsolution...
...elow, but this doesn't mean that you shouldn't use them in your websites — it just requires some knowledge and careful thinking. let's explore the code in a bit more detail. ...
...0 removes the border. using this isn't really recommended any more, as the same effect can be better achieved using border: none; in ...
...ent from a different origin (it can keep attackers from running arbitrary scripts through the plugin). ...

Fullscreen API - Web APIs
e set to true). to change preferences in firefox, visit about:config. no support 9 — 65notes alternate name notes before firefox 44, firefox incorrectly allowed elements inside a <frame> or <object> element to request, and to be granted, fullscreen. ...
...e (needs to be set to true). to change preferences in firefox, visit about:config. no support 9 — 65notes alternate name notes before firefox 44, firefox incorrectly allowed elements inside a <frame> or an <object> to request, and to be granted, fullscreen. ...

HTMLIFrameElement - Web APIs
ent, htmlelement. htmliframeelement.align is a domstring that specifies the alignment of the frame with respect to the surrounding context. htmliframeelement.allow is a list of origins the the frame is allowed to display content from. this attribute also accepts the values self and src which represent the origin in the iframe's src attribute. the default value is src. htmliframeelement.allowfullscreen is a boolean indicating whether the inline frame is willing to be placed into full screen mode. see using full-screen mode for details. htmliframeelement.allowpaymentrequest is a boolean indicating whether the payment request api may be invoked inside a cross-origin iframe. htmliframeelement.contentdocument read only returns a document, the active document in the inline frame's nested bro...
...htmliframeelement.width is a domstring that reflects the width html attribute, indicating the width of the frame. methods inherits properties from its parent, htmlelement. specifications specification status comment html living standardthe definition of 'htmliframeelement' in that specification. living standard the following property has been added: allowfullscreen. html5the definition of 'htmliframeelement' in that specification. recommendation the following properties are now obsolete: scrolling, marginwidth, marginheight, longdesc, frameborder, and align. the following properties have been added: srcdoc, sandbox, and contentwindow. document object model (dom) level 2 html specificationthe definition of 'htmliframeelement' in t...

Document.fullscreenEnabled - Web APIs
although this property is read-only, it will not throw if it is modified (even in strict mode); the setter is a no-operation and it will be ignored. ...

Element.requestFullscreen() - Web APIs
trol features. the element and its document are the same node. usage notes compatible elements an element that you wish to place into full-screen mode has to meet a small number of simple requirements: it must be one of the standard html elements or <svg> or <math>. it is not a <dialog> element. it must either be located within the top-level document or in an <iframe> which has the allowfullscreen attribute applied to it. additionally, of course, the feature policy "fullscreen" permission must be granted. detecting full-screen activation you can determine whether or not your attempt to switch to full-screen mode is successful by using the promise returned by requestfullscreen(), as seen in the example below. to learn when other code has toggled full-screen mode on and off, you should ...

Guide to the Fullscreen API - Web APIs
lscreenchange event. note that the fullscreenchange event doesn't provide any information itself as to whether the document is entering or exiting fullscreen mode, but if the document has a non null fullscreenelement, you know you're in fullscreen mode. when a fullscreen request fails it's not guaranteed that you'll be able to switch into fullscreen mode. for example, <iframe> elements have the allowfullscreen attribute in order to opt-in to allowing their content to be displayed in fullscreen mode. in addition, certain kinds of content, such as windowed plug-ins, cannot be presented in fullscreen mode. attempting to put an element which can't be displayed in fullscreen mode (or the parent or descendant of such an element) won't work. instead, the element which requested fullscreen will receive a mozfu...

Creating a cross-browser video player - Developer guides
<source src="video/tears-of-steel-battle-clip-medium.ogg" type="video/ogg"> <!-- flash fallback --> <object type="application/x-shockwave-flash" data="flash-player.swf?videourl=video/tears-of-steel-battle-clip-medium.mp4" width="1024" height="576"> <param name="movie" value="flash-player.swf?videourl=video/tears-of-steel-battle-clip-medium.mp4" /> <param name="allowfullscreen" value="true" /> <param name="wmode" value="transparent" /> <param name="flashvars" value="controlbar=over&amp;image=img/poster.jpg&amp;file=flash-player.swf?videourl=video/tears-of-steel-battle-clip-medium.mp4" /> <img alt="tears of steel poster image" src="img/poster.jpg" width="1024" height="428" title="no video playback possible, please download the video from the l...

<iframe>: The Inline Frame element - HTML: Hypertext Markup Language
permitted aria roles application, document, img, none, presentation dom interface htmliframeelement attributes this element includes the global attributes. allow specifies a feature policy for the <iframe>. see the article privacy, permissions, and information security for details on security issues and how <iframe> works with feature policy to keep systems safe. allowfullscreen set to true if the <iframe> can activate fullscreen mode by calling the requestfullscreen() method. this attribute is considered a legacy attribute and redefined as allow="fullscreen". allowpaymentrequest set to true if a cross-origin <iframe> should be allowed to invoke the payment request api. this attribute is considered a legacy attribute and redefined as allow="payment". csp ...

Feature-Policy: fullscreen - HTTP
to use element.requestfullscreen(). when this policy is enabled, the returned promise rejects with a typeerror. by default, top-level documents and their same-origin child frames can request and enter fullscreen mode. this directive allows or prevents cross-origin frames from using fullscreen mode. this includes same-origin frames. if both this directive (i.e. via the allow attribute) and the allowfullscreen attribute are present on an <iframe> element, this directive takes precedence. there was a bug whereby the fullscreen directive didn't work unless the allowfullscreen attribute was also present, but this has been fixed as of firefox 80 (bug 1608358). syntax feature-policy: fullscreen <allowlist>; <allowlist> an allowlist is a list of origins that takes one or more of the following values, ...