计时器：倒计时，自动跳转

<body>
    <input type="text" readonly="true" value="10" id="time">
</body>

<script language="javascript">
    var t = 60;//60个1秒
    var time = document.getElementById("time");
    function fun(){
        t--;
        time.value = t;
        if(t<=0){
            window.location = "PostTestController.action?testId=" + testId; //提交
            clearInterval(inter);
        }
    }
    var inter = setInterval("fun()",1000); //1000毫秒=1秒
</script>

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