js控制audio

/*html代码部分*/

               <a href="javascript:void(0);" onclick="getCurrentTime('firefox');">获取播放时间</a>

            <a href="javascript:void(0);" onclick="playOrPaused('firefox',this);">播放</a>

            <a href="javascript:void(0);" onclick="hideOrShowControls('firefox',this);">隐藏控制框</a>

            <a href="javascript:void(0);" onclick="muted('firefox',this);">开启静音</a>

<audio src="assets/img/music.mp3" id="audio"  ></audio>

/*html代码部分*/

/*js部分*/

<script type="text/javascript">

  var audio ;

window.onload = function(){

initAudio();

}

var initAudio = function(){

//audio = document.createElement("audio")

//audio.src='Never Say Good Bye.ogg'

audio = document.getElementById('audio');

}

function getCurrentTime(id){

alert(parseInt(audio.currentTime) + '：秒');

player.controls.currentPosition

}

function playOrPaused(id,obj){

if(audio.paused){

audio.play();

obj.innerHTML='paused';

return;

}

audio.pause();

obj.innerHTML='play';

}

function hideOrShowControls(id,obj){

if(audio.controls){

audio.removeAttribute('controls');

obj.innerHTML = '显示控制框'

return;

}

audio.controls = 'controls';

obj.innerHTML = 'true'

return;

}

function vol(id,type , obj){

if(type == 'up'){

var volume = audio.volume + 0.1;

if(volume >=1 ){

volume = 1 ;

}

audio.volume = volume;

}else if(type == 'down'){

var volume = audio.volume - 0.1;

if(volume <=0 ){

volume = 0 ;

}

audio.volume = volume;

}

document.getElementById('nowVol').innerHTML = returnFloat1(audio.volume);

}

function muted(id,obj){

if(audio.muted){

audio.muted = false;

obj.innerHTML = '开启静音';

}else{

audio.muted = true;

obj.innerHTML = '关闭静音';

}

}

//保留一位小数点

function returnFloat1(value) {

value = Math.round(parseFloat(value) * 10) / 10;

if (value.toString().indexOf(".") < 0){

value = value.toString() + ".0";

}

return value;

}

</script>