//通過javascript的日期對(duì)象來得到當(dāng)前的日期，并輸出。

var myday = new Date();

var year = myday.getFullYear();

var month = myday.getMonth();

var day = myday.getDate();

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

var week = myday.getDay();

document.write(year + "年" + (month + 1) + "月" + day + "日" + weekday[week] + "<br />")

//成績(jī)是一長(zhǎng)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 Str = "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 arr = Str.split(";");

var data = new Array();

var sum = 0;

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

data[i] = arr[i].split(':');

}

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

sum = sum + parseInt(data[i][1]);

}

//從數(shù)組中將成績(jī)撮出來，然后求和取整，并輸出。

document.write("總成績(jī)" + sum + "<br/>");

document.write("平均成績(jī)" + sum / parseInt(data.length));