js 实现5秒倒计时后跳转页面

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<script type="text/javascript">

        function countDown(secs, surl) {

            var jumpTo = document.getElementById('jumpTo');

            jumpTo.innerHTML = secs;

            if (--secs > 0) {

                setTimeout("countDown(" + secs + ",'" + surl + "')", 1000);

            }

            else {

                location.href = surl;

            }

        }

    </script>

使用方法:

<div>

        <h2>

            发生错误，<span id="jumpTo">5</span>秒后自动跳转到首页，返回后请联系客服!</h2>

    </div>

    <script type="text/javascript">        countDown(5, '/default.aspx');</script>