html前端时间自动刷新显示，格式：2018年6月21日 星期四 10:15

$(function () {
        setInterval("getTime();", 1000); //每隔一秒运行一次
    })
    //取得系统当前时间
    function getTime() {
        var myDate = new Date();
        var year = myDate.getFullYear();
        var month = myDate.getMonth()+1;
        var day = myDate.getDate();
        var weekday=myDate.getDay();
        var weekdayCh=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
        var hours = myDate.getHours();
        var minutes = myDate.getMinutes();
        if (day < 10) {
            day = "0" + day;
        }

        if (hours<10)
        {
            hours = "0" + hours;
        }

        if (minutes < 10) {
            minutes = "0" + minutes;
        }

      $("#sj").html(year + "年" + month + "月" + day + "日" + " " + weekdayCh[weekday] + " " + hours + ":" + minutes);//这里的sj是显示的控件的id

    }