<input type="button" id="send" value="发送验证码">
window.onload=function(){
var send=document.getElementById('send'),
times=60,
timer=null;
send.onclick=function(){
// 计时开始
timer=setInterval(function(){
times--;
if(times<=0){
send.value="发送验证码";
clearInterval(timer);
times=10;
send.disabled=false;
}else{
send.value=times+"秒后重试"
send.disabled=true;
}
},1000)
}
}
