<!doctype html> <html> <head> <title>APP</title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/> <meta http-equiv="Content-Type" content="text/html;charset=gbk"/> <script type="text/javascript"> // 开始 function download(url) { //cpjs0204.pdf window.location.href = url; } </script> </head> <body style="background:#fff;"> <div style="text-align:center"> <br> <br> <button style="width:80px;height:30px;background:#1798f2;text-align:center; color:#fff;font-size:1.2em;" onclick="playPause()">播放</button> <button style="width:80px;height:30px;background:#1798f2;text-align:center; color:#fff;font-size:1.2em;" onclick="makeBig()">放大</button> <button style="width:80px;height:30px;background:#1798f2;text-align:center; color:#fff;font-size:1.2em;" onclick="makeSmall()">缩小</button> <button style="width:80px;height:30px;background:#1798f2;text-align:center; color:#fff;font-size:1.2em;" onclick="makeNormal()">常规</button> <br> <video id="video_view" width="420" poster="images/banner.png" src="file/demo.mp4"> not support </video> </div> <script> var myVideo = document.getElementById("video_view"); function playPause() { if (myVideo.paused) myVideo.play(); else myVideo.pause(); } function makeBig() { myVideo.width=560; } function makeSmall() { myVideo.width=320; } function makeNormal() { myVideo.width=420; } </script> </body> </html>