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HTML实时获取当前时间

<script type="text/javascript">
        function gettime() {
            var time=new Date();
            var arr=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
            var hour=time.getHours();
            var min=time.getMinutes();
            var sec=time.getSeconds();
            var madetime=time.getFullYear()+"-"+(time.getMonth()+1)+"-"+time.getDate()+" "+arr[time.getDay()]+"  "+hour+(min<10?":0":":")+min+(sec<10?":0":":")+sec+(hour<12?" am":" pm");
            document.getElementById("nowtime").innerText = madetime;
        }
        gettime();//显示第一秒的时间
        setInterval("gettime()",1000);
    </script>

</span>当前时间：<span id="nowtime">时间获取中:)...</span>

效果：



注意：getMonth()返回值是0-11,所以要加1