终于弄出来了，应该没错了

源自：7-23 编程练习

<html >

<head>

<title>系好安全带,准备启航</title>

var mydate=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 b=mydate.getDay();

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 fg=scoreStr.split(";");

var sum=0,pjf=0;

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

sum=sum+parseInt(fg[i].substring(3,5));

pjf=Math.floor(sum/parseInt(fg.length));

}

document.write(mydate.getFullYear()+"年"+mydate.getMonth()+"月"+mydate.getDate()+"日"+"  "+weekday[b]+"  "+"班级总分："+sum+"<br>"+"平均分"+pjf);

</script>

</head>

<body>

</body>

</html>

提问者：顾先生r 2020-10-25 19:23