JavaScript倒计时并刷新页面

//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>