<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script> <script> //兼容IE function isFullscreen() { return document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || false; } setInterval(function () { if (isFullscreen()) { console.log('Fullscreen') } else { console.log('Not Fullscreen') } }, 2000); //绑定动态元素Parent元素单击事件 setInterval(function () { if ($('.on-parent')) { $('.on-parent').parent().off('click').click(function () { alert('循环器绑定动态元素Parent元素单击事件'); }) } }, 100) //各浏览器全屏改变事件，IE部分不兼容 document.addEventListener("fullscreenchange", function () { console.log((document.fullscreen) ? "全屏" : "非全屏"); }, false); document.addEventListener("mozfullscreenchange", function () { console.log((document.fullscreen) ? "全屏" : "非全屏"); }, false); document.addEventListener("webkitfullscreenchange", function () { console.log((document.fullscreen) ? "全屏" : "非全屏"); }, false); document.addEventListener("msfullscreenchange", function () { console.log((document.fullscreen) ? "全屏" : "非全屏"); }, false); function appentonParent() { $('#btnAppentonParent').after('<div><p>OnParent</p><p class="on-parent">On</p></div>'); } //绑定动态元素Parent元素单击事件 无效 $(document).on('click', '.on-parent:parents', function () { alert('绑定动态元素Parent元素单击事件'); }) </script> <video src="http://vfx.mtime.cn/Video/2019/02/04/mp4/190204084208765161.mp4" controls="controls"> 浏览器不支持Video </video> <br /> <button id="btnAppentonParent" onclick="appentonParent()"> 追加动态元素 </button> </body> </html>