感覺寫復(fù)雜了
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????<meta?charset="UTF-8">
????<meta?name="viewport"?content="width=device-width,?initial-scale=1.0">
????<title>Document</title>
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????<script>
????????//獲取日期
????????var?taday?=?new?Date();
????????var?weekday?=?["星期日",?"星期一",?"星期二",?"星期三",?"星期四",?"星期五",?"星期六"]
????????let?time?=?taday.getDay();
????????let?timeWeek?=?weekday[time];
????????let?timeYear?=?taday.getFullYear();
????????let?timeMonth?=?taday.getMonth();
????????let?timeDate?=?taday.getDate();
????????//成績平均值
????????var?scoreStr?=?"小明:87;小花:81;小紅:97;小天:76;小張:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";
????????let?arr?=?new?Array();
????????arr?=?scoreStr.split(";")
????????var?count?=?0;
????????var?num2?=?0;
????????for?(var?i?=?0;?i?<?arr.length;?i++)?{
????????????var?num?=?Number(arr[i].substring(3,?5));
????????????num2?+=?num;
????????????count++;
????????}
????????var?b?=?parseInt(num2?/?count);
????????document.write(timeYear?+?"年"?+?timeMonth?+?"月"?+?timeDate?+?"日"?+?" "?+?timeWeek?+?"--班級總分數(shù)為："?+?b);
????</script>
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2021-12-27
<!DOCTYPE? HTML>
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>系好安全帶,準備啟航</title>
<script type="text/javascript">
? ? var? Today=new Date();
? ? var? weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
? ? var num=Today.getDay();
? ? var moth=Today.getMonth();
? ? document.write(Today.getFullYear()+"年"+(moth+1)+"月"+Today.getDate()+"日"+"  "+weekday[num]+"<br>");
? //通過javascript的日期對象來得到當前的日期，并輸出。
? //成績是一長竄的字符串不好處理，找規(guī)律后分割放到數(shù)組里更好操作哦
? var scoreStr = "小明:87;小花:81;小紅:97;小天:76;小張:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";
? var sum=0;
? var scoreStr_last=scoreStr.split(";");
? document.write(scoreStr_last+"<br>");
??
?for (var i=0;i<scoreStr_last.length;i++){
? ? ?var fen=scoreStr_last[i].split(":");
? ? ?document.write(fen);
? ? ?sum+=parseInt(fen[1]);
?}
?document.write("<br>"+"該班級的平均分為："+sum/scoreStr_last.length)
? //從數(shù)組中將成績撮出來，然后求和取整，并輸出。
</script>
</head>
<body>
</body>
</html>
像我一樣！