Don’t use XHTML; it’s silly. Tip: It is a good practice to always include a title attribute for the . We can’t just make it mobile-friendly by just adding max-width:100%. Posted by: admin /* Get the element you want displayed in fullscreen mode (a video in this example): */ var elem = document.getElementById("myvideo"); /* When the openFullscreen() function is executed, open the video in fullscreen. To scale the Iframe embed or HTML5 video, Both need a different technique to handle their responsiveness. And its parent. Try changing the allowfullscreen attribute to allowfullscreen="" Note that is two double-quotes after the equal sign. allowfullscreen is an HTML attribute for the iframe tag. Note that we must include prefixes for different browsers, as they don't support the requestFullscreen method yet */ Make sure the fullscreen button is toggled on under the Controls section Playing a YouTube Video in HTML. When disabled, the iframe background will become black. In this code the iframe (fullscreen) not working, yes, now i edit the code which is not working. What do you mean by: "when i try to remove the video"? URL Method: Take the url. Name of author (and anthology) of a sci-fi short story called (I think) "Gold Brick"? The ” iframe ” tag defines a rectangular region within the document in which the browser can display a separate document, including scrollbars and borders. Iframes and Security . Developers mainly use the iframe tag to embed another HTML document within the current one. Just set the positioning of the fixed element and add a height/width of 100%. I need to make iframe enter fullscreen mode, For the purpose of demonstration, this article will use a YouTube embed for our iframe. The following HTML code, when inserted into a webpage, displays a YouTube video with a fullscreen button: In short, try changing the /v/ to /embed/ in the YouTube URL if you're having a problem. February 24, 2020 Javascript Leave a comment. Set the width and height to 100% and absolutely position it to the top left. How does one calculate effects of damage over time if one is taking a long rest? The