六.获取当前时间(年月日时分秒)

 window.onload=function() {showTime();}
    function checkTime(i){
        if(i<10){i="0"+i}
        return i;
    }
        function showTime() {
        var now = new Date();
        var year = now.getFullYear();
        var month = now.getMonth() + 1;
        var date = now.getDate();
        var d = now.getDay();
        var h = now.getHours();
        var m = now.getMinutes();
        var s = now.getSeconds();
            m=checkTime(m);
            s=checkTime(s);
        var weekday = new Array(7);
        weekday[0] = "星期日"
        weekday[1] = "星期一"
        weekday[2] = "星期二"
        weekday[3] = "星期三"
        weekday[4] = "星期四"
        weekday[5] = "星期五"
        weekday[6] = "星期六"
        document.getElementById('show').innerHTML = year + "年" + month + "月" + date + "日" + " " + weekday[d] + " " + h + ":" + m + ":" + s;
       t=setTimeout(showTime,500);
    }

<div class="content1">
    <div id="show">显示时间的位置</div>
</div>