date制作电子时钟

首先我们得获取时间，利用函数date来获取各个需要的值：

var time = new Date();
    var year = time.getFullYear();
    var month = time.getMonth()+1;
    var day = time.getDate();
    var week = time.getDay();
    var hour = time.getHours();
    var minute  = time.getMinutes();
    var second  = time.getSeconds();
    var flag = 'AM';
    switch(week){
        case 1:week = "一"; break;
        case 2:week = "二"; break;
        case 3:week = "三"; break;
        case 4:week = "四"; break;
        case 5:week = "五"; break;
        case 6:week = "六"; break;
        default: week = "日";break;
    }
    if(hour<10){
        hour = "0" + hour;
        
    }
    if(hour>12){
        flag = "PM";
    }
    if(minute<10){
        minute = "0" + minute;
    }
    if(second<10){
        second = "0" + second;
    }
    var result = year+"年 "+month+"月 "+day+"日  星期"+week+" "+hour+":"+minute+":"+second + " "+flag;
    document.write(result);

如果要想让它自动刷新，就看制作电子表（二）吧。。