<!DOCTYPE ?HTML><html ><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>系好安全帶,準(zhǔn)備啟航</title><script type="text/javascript">var d=new Date();var weekday=["星期日","星期一","星期二","星期二","星期三","星期四","星期五","星期六"];var mynum=d.getDay();document.write(d.getFullYear()+"年"+(d.getMonth()+1)+"月"+d.getDate()+"日"+weekday[mynum]);? //通過javascript的日期對象來得到當(dāng)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 scorearr =scoreStr.split(";");? var b=new Array();? var sum=0;? for(var i=0;i<scorearr.length;i++){? ? ? sum +=parseInt(scorearr[i].substr(scorearr[i].indexOf(":")+1));? }? document.write("--班級總分為:"+sum)? document.write(",班級平均分為(保留整數(shù)):" +Math.round(sum/sourcearr.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>
平均分求不出
webbbbbb
2017-07-04 14:41:44
