//10秒倒计时效果自动补全09,08等
<div id="we">10</div>s <script> window.onload = function(){ var we = document.getElementById("we"); console.log(we.innerHTML); var int=setInterval(function(){ we.innerHTML--; console.log(we.innerHTML); if(we.innerHTML<=9){ we.innerHTML='0'+ we.innerHTML } if(we.innerHTML==0){ clearInterval(int); window.location.reload(); } },1000); } </script>