自己写的，分享下

//通过javascript的日期对象来得到当前的日期，并输出。

  var time = new Date();

  var myday = time.getDate();

  var year = time.getFullYear();

  var month = time.getMonth() + 1;

  var day = time.getDay();

  var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];

  document.write(year + "年" + month + "月" + myday + "日" + weekday[day] + "<br>");

  //成绩是一长窜的字符串不好处理，找规律后分割放到数组里更好操作哦

  var scoreStr = "小明:87;小花:81;小红:97;小天:76;小张:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";

  var scores = scoreStr.split(';');

  var sum = 0;

  for (var i = 0; i < scores.length; i++){

      document.write(scores[i]+"<br>");

      var arr = scores[i].toString();

      sum += parseInt(arr.substring(arr.length-2));

      //document.write(score+"<br>");

  }

  document.write(Math.round(sum)+"<br>");