<!DOCTYPE HTML><html ><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>系好安全带,准备启航</title><script type="text/javascript">var mydate=new Date();document.write(mydate.getFullYear()+"年"+(mydate.getMonth()+1)+"月"+mydate.getDate()+"日"+"<br>");var week=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];document.write(week[mydate.getDay()]); //通过javascript的日期对象来得到当前的日期,并输出。 //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 scoreArr=scoreStr.split(";"); //从数组中将成绩撮出来,然后求和取整,并输出。var sum=0; var avg=0; for(i=0;i<=scoreArr.length;i++){ sum=sum+parseInt(scoreArr[i].slice(3,5)); } avg=sum/scorearr.length; document.write(parseInt(avg)); </script></head><body></body></html>我这个哪里出错了,大牛求解啊
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