music.addEventListener("touchstart",function(event){

if(audio.paused){

audio.play();

console.log(this);

this.setAttribute("class","play");

// this.style.animationPlayState="running";

}else{

audio.pause();

this.setAttribute("class","");

console.log(this);

// this.style.animationPlayState="paused";

};

},false);

page1.addEventListener("touchstart",function(event) {

console.log(this);

page1.style.display = "none";

page2.style.display = "block";

},false);

page1没有实现，怎么回事？