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                        /JavaScript進階篇

為啥打印出來的不是和

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<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">

? //通過javascript的日期對象來得到當前的日期，并輸出。
?
? var today = new Date();
? var date = today.getDate();
? var mouth = today.getMonth();
? var year = today.getYear();
? var day = today.getDay();
? var weekday = Array(7);
? weekday[0] = "星期日";
? weekday[1] = "星期一";
? weekday[2] = "星期二";
? weekday[3] = "星期三";
? weekday[4] = "星期四";
? weekday[5] = "星期五";
? weekday[6] = "星期六";
? document.write(year + "年" + mouth + "月" + date + "日" + weekday[day] + "</br>");
?
?
? //成績是一長竄的字符串不好處理，找規律后分割放到數組里更好操作哦
? 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 scoreStr = scoreStr.split(";");
? for (i = 0;i <= scoreStr.length - 1; i++){
??? var arr = scoreStr[i].split(":");
??? var nuum = arr[1];
??? nuum = parseFloat(nuum);
??? var sum = 0;
??? sum = sum + nuum;
??? document.write(sum);
? }

? //從數組中將成績撮出來，然后求和取整，并輸出。
?

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