1 var clock = function(clockName){ 2     var mydate = new Date(); 3     var hours = mydate.getHours(); 4     var minutes = mydate.getMinutes(); 5     var seconds = mydate.getSeconds(); 6     var month = (mydate.getMonth()+1); 7     var date = mydate.getDate(); 8     var day = new Date().getDay(); 9     var text = "";10     switch (day) {11         case 0:12             text = "周日";13             break;14         case 1:15             text = "周一";16             break;17         case 2:18             text = "周二";19             break;20         case 3:21             text = "周三";22             break;23         case 4:24             text = "周四";25             break;26         case 5:27             text = "周五";28             break;29         case 6:30             text = "周六";31             break;32   }33   if(month < 10){34       month = '0' + month;35   }36   if(date < 10){37       date = '0' + date;38   }39   if(hours < 10){40       hours = '0' + hours;41   }42   if(minutes < 10){43       minutes = '0' + minutes;44   }45   if(seconds < 10){46       seconds = '0' + seconds;47   }48   var str = text +" "+ month + "-" + date + " " + hours +":"+ minutes;49   $('#' + clockName).html("").text(str);50 }

使用：

    clock('clock');

    setInterval(function(){

        clock('clock');

    },1000);