如何使用Javascript使窗口全屏(伸展整个屏幕)

如何使用JavaScript使访问者的浏览器全屏显示，同时兼容IE、Firefox和Opera?

当前回答

 <!DOCTYPE html>
    <html>
    <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    </head>
    <body>
    
    <h2>Fullscreen with JavaScript</h2>
    <p>Click on the button to open the video in fullscreen mode.</p>
    <button onclick="openFullscreen();">Open Video in Fullscreen Mode</button>
    <p><strong>Tip:</strong> Press the "Esc" key to exit full screen.</p>
    
    <video width="100%" controls id="myvideo">
      <source src="rain.mp4" type="video/mp4">
      <source src="rain.ogg" type="video/ogg">
      Your browser does not support the video tag.
    </video>
    
    
    <script>
    var elem = document.getElementById("myvideo");
    function openFullscreen() {
      if (elem.requestFullscreen) {
        elem.requestFullscreen();
      } else if (elem.webkitRequestFullscreen) { /* Safari */
        elem.webkitRequestFullscreen();
      } else if (elem.msRequestFullscreen) { /* IE11 */
        elem.msRequestFullscreen();
      }
    }
    </script>
    
    <p>Note: Internet Explorer 10 and earlier versions do not support the msRequestFullscreen() method.</p>
    
    </body>
    </html>

来源:https://www.w3schools.com/howto/howto_js_fullscreen.asp

2021-06-22 13:27:56

其他回答

既然全屏api越来越广泛，而且似乎越来越成熟，为什么不试试Screenfull.js呢?我昨天第一次使用它，今天我们的应用程序在(几乎)所有浏览器中真正全屏!

确保它与CSS中的:fullscreen伪类相结合。详见https://www.sitepoint.com/use-html5-full-screen-api/。

2016-09-07 10:15:23

简单的例子:http://www.longtailvideo.com/blog/26517/using-the-browsers-new-html5-fullscreen-capabilities/

<script type="text/javascript">
  function goFullscreen(id) {
    // Get the element that we want to take into fullscreen mode
    var element = document.getElementById(id);

    // These function will not exist in the browsers that don't support fullscreen mode yet, 
    // so we'll have to check to see if they're available before calling them.

    if (element.mozRequestFullScreen) {
      // This is how to go into fullscren mode in Firefox
      // Note the "moz" prefix, which is short for Mozilla.
      element.mozRequestFullScreen();
    } else if (element.webkitRequestFullScreen) {
      // This is how to go into fullscreen mode in Chrome and Safari
      // Both of those browsers are based on the Webkit project, hence the same prefix.
      element.webkitRequestFullScreen();
   }
   // Hooray, now we're in fullscreen mode!
  }
</script>

<img class="video_player" src="image.jpg" id="player"></img>
<button onclick="goFullscreen('player'); return false">Click Me To Go Fullscreen! (For real)</button>

2013-02-28 12:59:38

你能试试吗:

2018-12-27 12:43:31

这个函数非常好用

function toggle_full_screen()
{
    if ((document.fullScreenElement && document.fullScreenElement !== null) || (!document.mozFullScreen && !document.webkitIsFullScreen))
    {
        if (document.documentElement.requestFullScreen){
            document.documentElement.requestFullScreen();
        }
        else if (document.documentElement.mozRequestFullScreen){ /* Firefox */
            document.documentElement.mozRequestFullScreen();
        }
        else if (document.documentElement.webkitRequestFullScreen){   /* Chrome, Safari & Opera */
            document.documentElement.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
        }
        else if (document.msRequestFullscreen){ /* IE/Edge */
            document.documentElement.msRequestFullscreen();
        }
    }
    else
    {
        if (document.cancelFullScreen){
            document.cancelFullScreen();
        }
        else if (document.mozCancelFullScreen){ /* Firefox */
            document.mozCancelFullScreen();
        }
        else if (document.webkitCancelFullScreen){   /* Chrome, Safari and Opera */
            document.webkitCancelFullScreen();
        }
        else if (document.msExitFullscreen){ /* IE/Edge */
            document.msExitFullscreen();
        }
    }
}

要使用它，只需调用:

toggle_full_screen();

2021-01-28 19:28:09

这里有一个完整的解决方案，以进入和退出全屏模式(即取消，退出，退出)

        function cancelFullScreen() {
            var el = document;
            var requestMethod = el.cancelFullScreen||el.webkitCancelFullScreen||el.mozCancelFullScreen||el.exitFullscreen||el.webkitExitFullscreen;
            if (requestMethod) { // cancel full screen.
                requestMethod.call(el);
            } else if (typeof window.ActiveXObject !== "undefined") { // Older IE.
                var wscript = new ActiveXObject("WScript.Shell");
                if (wscript !== null) {
                    wscript.SendKeys("{F11}");
                }
            }
        }

        function requestFullScreen(el) {
            // Supports most browsers and their versions.
            var requestMethod = el.requestFullScreen || el.webkitRequestFullScreen || el.mozRequestFullScreen || el.msRequestFullscreen;

            if (requestMethod) { // Native full screen.
                requestMethod.call(el);
            } else if (typeof window.ActiveXObject !== "undefined") { // Older IE.
                var wscript = new ActiveXObject("WScript.Shell");
                if (wscript !== null) {
                    wscript.SendKeys("{F11}");
                }
            }
            return false
        }

        function toggleFullScreen(el) {
            if (!el) {
                el = document.body; // Make the body go full screen.
            }
            var isInFullScreen = (document.fullScreenElement && document.fullScreenElement !== null) ||  (document.mozFullScreen || document.webkitIsFullScreen);

            if (isInFullScreen) {
                cancelFullScreen();
            } else {
                requestFullScreen(el);
            }
            return false;
        }

2012-08-05 22:46:36

如何使用Javascript使窗口全屏(伸展整个屏幕)

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