var data = ['Phone5','Ipad','三星笔记本','佳能相机','惠普打印机','谢谢参与','50元充值卡','1000元超市购物券'],
timer = 0,
num = 0;
window.onload = function(){
var title = document.getElementById('title'),
play = document.getElementById('play'),
stop = document.getElementById('stop');
play.onclick = function(){
playFun(title, play);
};
stop.onclick = function(){
stopFun(play);
};
document.onkeyup = function(e){
e = e || window.event;
if(e.keyCode == 13){
if(num === 0){
playFun(title,play);
num = 1;
}else{
stopFun(play);
num = 0;
}
}
}
};
function playFun(tit, node){
clearInterval(timer);
timer = setInterval(function(){
tit.innerHTML = data[Math.floor(Math.random()* data.length)];
},50);
node.style.backgroundColor = '#999';
}
function stopFun(node){
clearInterval(timer);
node.style.backgroundColor = '#369';
}