设置按钮没反应求解决

<div> 
    <p id="time">p>
    <audio id="myAudio" src="C:\Users\31979\Desktop\静态的QQ音乐\雨.mp3" controls="controls">audio>
    <input type="button" id="playStop" value="Play"/>
    <input type="button" id="volumeUp" value="+"/>
    <input type="button" id="volumeDown" value="-"/>
    <input type="button" id="loop" value="Loop off"/>
    <P id="volumeValue">P>
div>
<script type="text/javascript">
    var audio= document.getElementById("myAudio");//音频
    var time= document.getElementById("time");
    var volumeValue= document.getElementById("volumeValue");
    var volume =100;
    var volumeUpBtn= document.getElementById("volumeUp"); 
    var volumeDownBtn= document.getElementById("volumeDown");
    var PlayStopBtn= document.getElementById("playStop");//获取按键
    var loopBtn= document.getElementById("loop");
    
    var playStop=function(){
        if(audio.paused==true){
            audio.play();
        }else{
            audio.paused(); 
        }
    }
    var volumeUp=function(){
        if (volume<100) {
            audio.volume+=0.1;
            volume+=10;
            volumeValue.innerHTML="音量"+volume.toString()+"%";
        }
    }
     var volumeDown=function(){
        if (volume>0) {
            audio.volume-=0.1;
            volume-=10;
            volumeValue.innerHTML="音量"+volume.toString()+"%";
        }
    }
    var loopSwitch=function(){
        if(audio.loop==false){
            audio.loop=true;
            loopBtn.value="Loop On";
        }else{
            audio.loop=false;
            loopBtn.value="Loop off";
        }
    }
    audio.onplaying=function(){
        PlayStopBtn.value="Pause";
    }
     audio.onpause=function(){
        PlayStopBtn.value="play";
    }
    audio.oncanplay=function(){
        time.innerHTML="播放时长"+Math.floor(audio.currentTime)+"/"+Math.floor(audio.duration);
        volumeValue.innerHTML="音量"+volume.toString()+"%";
    }
     audio.ontimeupdate=function(){
        time.innerHTML="播放时长"+Math.floor(audio.currentTime)+"/"+Math.floor(audio.duration);
     }  
   PlayStopBtn.addEventListener('click',PlayStop );
   volumeUpBtn.addEventListener('click', volumeUp);
    olumeDownBtn.addEventListener('click',volumeDown);
    loopBtn.addEventListener('click',loopSwitch );
script>

1. pause写错

2. 变量写错

有问题先看console控制台，一般都会有报错信息的