javascript实现简单的html5视频播放器

define("html5_video_player", [ '../avalon-min'], function(avalon) {  function formatTime(seconds) {    var seconds = Math.round(seconds);    var minutes = Math.floor(seconds / 60);    seconds = Math.floor(seconds % 60);    minutes = (minutes >= 10) ? minutes : "0" + minutes;    seconds = (seconds >= 10) ? seconds : "0" + seconds;    return minutes + ":" + seconds;  }  var playing=false,mute=false,vol=50,fs=false,active=false,inactivityTimeout=timer=null;  avalon.bind($('control_btn'),'click',function(){    if(!playing){      $('html5_video').play();      $('control_btn').className='html5_video_pause_btn inline-block';      playing=true;    }else{      $('html5_video').pause();      $('control_btn').className='html5_video_play_btn inline-block';      playing=false;    }  });  avalon.bind($('video_bar'),'click',function(e){    var a=(e.clientX-$('video_bar').offsetLeft)/$('video_bar').offsetWidth;    $('html5_video').currentTime =a.toFixed(2)*$('html5_video').duration;  });  avalon.bind($('vol_bar'),'click',function(e){    var a=(e.clientX-$('vol_bar').offsetLeft-8)/$('vol_bar').offsetWidth;    vol=$('html5_video').volume =a;    $('vol_value').style.width=a*100+'%';  });  avalon.bind($('mute_icon'),'click',function(){    if(!mute){      $('html5_video').volume=0;      $('mute_icon').className='html5_video_mute1';      mute=true;    }else{      $('html5_video').volume=vol;      $('mute_icon').className='html5_video_mute';      mute=false;    }  });  avalon.bind($('html5_video'),'loadedmetadata',function(){    $('html5_video_duration').innerHTML=formatTime($('html5_video').duration);    $('html5_video').volume=0;  });  avalon.bind($('html5_video'),'timeupdate',function(){    $('html5_play_time').innerHTML=formatTime($('html5_video').currentTime);    $('video_progress_bar').style.left=$('html5_video').currentTime/$('html5_video').duration*100+'%';  });  avalon.bind($('html5_video_fullscreen'),'click',function(e){    if(!fs){      toggle_fullscreen();    }else{      exit_fullscreen();    }  });  document.onmozfullscreenchange = function() {    if ($('html5_video').clientWidth +2!= document.documentElement.clientWidth) {      exit_fullscreen();    }  };  document.onwebkitfullscreenchange = function() {    if ($('html5_video').clientWidth!= document.documentElement.clientWidth) {      exit_fullscreen();    }  };  function exit_fullscreen() {    $('html5_video').className='';    fs = false;    active=false;    $('video_control').className='';    if (document.exitFullscreen) {      document.exitFullscreen();    } else if (document.webkitCancelFullScreen) {      document.webkitCancelFullScreen();    } else if (document.mozCancelFullScreen) {      document.mozCancelFullScreen();    }  }  function toggle_fullscreen() {    $('html5_video').className='video_fs';    fs = true;    $('video_control').className='fullscreen';    var elem=$('html5_video');    if (elem.msRequestFullscreen) {      elem.msRequestFullscreen();    } else if (elem.mozRequestFullScreen) {      elem.mozRequestFullScreen();    } else if (elem.webkitRequestFullscreen) {      elem.webkitRequestFullscreen();    }  }  function updateBuffered() {     var v = $('html5_video');     var r = v.buffered;     if (r) {      for (var i=0; i<r.length; i++) {       var start = r.start(i);       var end = r.end(i);      }      $('video_buffer_bar').style.width=end/$('html5_video').duration*100+'%';     }    }  setInterval(updateBuffered,500);  function b(){    if(active){      $('video_control').style.display='none';      active=false;      console.log(active);    }  }  avalon.bind($('html5_video'),'mousemove',function(e){    if(fs){      clearTimeout(inactivityTimeout);      active=true;      $('video_control').style.display='block';      inactivityTimeout = setTimeout(b, 5000);    }  });});

<link type="text/css"  href="http://localhost/twitter/css/html5_video_player.css"  rel="stylesheet" /><div id='wrap_html5_video'>  <div id='html5_video_area'>    <video id="html5_video" width="360" height="240">      <source type=" video/mp4" src="http://localhost/twitter/videos/2.mp4"></source>      <source type=" video/webm"        src="http://localhost/twitter/videos/2.webm"></source>    </video>  </div>  <div id='video_control'>    <div id='video_bar'>      <div id='video_buffer_bar'></div>      <div id='video_progress_bar'></div>    </div>    <div id='play_control'>      <ul>        <li class='inline-block'><a          class='html5_video_play_btn inline-block' id='control_btn'></a></li>        <li class='inline-block'><a id='mute_icon'          class='html5_video_mute'></a>          <div id='vol_bar' class='inline-block'>            <p id='vol_value'></p>          </div></li>        <li class='inline-block' id='html5_video_time'><span          id='html5_play_time'>00:00</span><span>/</span><span          id='html5_video_duration'>33:44</span></li>        <li class='inline-block'><a id='html5_video_fullscreen'          class='inline-block'></a></li>      </ul>    </div>    <div id='a'></div>  </div>  <div id='buffered_log'></div></div><script type="text/javascript">  require('html5/html5_video_player');</script>

@CHARSET "UTF-8";#wrap_html5_video {  padding: 10px;  width: 360px;}#vol_bar,#video_bar,#vol_value {  height: 9px;  background-color: #999999;}#vol_bar {  width: 100px;  cursor: pointer;}#vol_value {  background-color: #179df7;  width: 50%;}#html5_video {  display: block;  border: 1px solid #c0deed;}#video_buffer_bar {  background-color: #179DF7;  width: 0;}#video_progress_bar,#video_buffer_bar {  position: absolute;  height: 100%;}#video_progress_bar {  background-color: #0066FF;  width: 2px;  left: 0;}.html5_video_pause_btn,.html5_video_play_btn {  width: 40px;  height: 40px;  cursor: pointer;}.html5_video_play_btn {  background: url("http://localhost/twitter/images/html5_video.jpg") 0 0    no-repeat;}.html5_video_play_btn:hover {  background: url("http://localhost/twitter/images/html5_video.jpg") -41px    0 no-repeat;}.html5_video_pause_btn {  background: url("http://localhost/twitter/images/html5_video.jpg") 0    -42px no-repeat;}.html5_video_pause_btn:hover {  background: url("http://localhost/twitter/images/html5_video.jpg") -41px    -42px no-repeat;}#play_control a,#vol_bar {  vertical-align: middle;}#html5_video_fullscreen {  width: 25px;  background: url("http://localhost/twitter/images/html5_video.jpg") 0    -310px no-repeat;  height: 18px;}#play_control #html5_video_time {  font-size: 14px;}#play_control li,#play_control ul {  font-size: 0;}#play_control li:last-child {  position: absolute;  right: 0;}.html5_video_mute1 {  background: url("http://localhost/twitter/images/html5_video.jpg")    no-repeat scroll -79px -170px rgba(0, 0, 0, 0);}.html5_video_mute {  background: url("http://localhost/twitter/images/html5_video.jpg")    no-repeat scroll 0 -170px rgba(0, 0, 0, 0);}#mute_icon {  cursor: pointer;  display: inline-block;  height: 15px;  width: 18px;}.html5_video_mute:hover {  background: url("http://localhost/twitter/images/html5_video.jpg") -19px    -170px no-repeat;}#play_control li {  height: 40px;  vertical-align: top;  margin: 0 5px;}#play_control li:after {  display: inline-block;  width: 0;  height: 100%;  vertical-align: middle;  content: '';}#play_control,#video_bar,#vol_bar {  position: relative;}body .fullscreen {  position: fixed;  left: 0;  bottom: 0;  width: 100%;  overflow: hidden;  z-index: 2147483647;  background-color: #fff;}video::-webkit-media-controls {  display: none !important;}