<!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">
??//通過javascript的日期對象來得到當(dāng)前的日期，并輸出。
?var?currentDate=new?Date();
?var?weekdays=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
?document.write(mydate.getFullYear()?+?"年"
?+mydate.getMonth()?+?"月"
?+mydate.getDate()?+?"日"?+?"?"
?+weekdays[mydate.getDay()];
??
??//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?myarr=scoreStr.split(";");
??var?scores=new?Array();
??
??for(i=0;i<myarr.length;i++){
???scores[i]=document.write(myarr[i].substr(3,2));
???//document.write("e");?for?test
??}
??
??//從數(shù)組中將成績撮出來，然后求和取整，并輸出。
??var?sum=0;
??var?averg=0;
??for(i=0;i<myarr.length;i++){
??????sum=sum+scores[i];
??}
??
??averg=parseInt(sum/myarr.length);
??document.write("--"+"班級總分為："+averg);?
</script>
</head>
<body>
</body>
</html>
2015-11-18
<!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"> ????????//通過javascript的日期對象來得到當(dāng)前的日期，并輸出。 ????????var?mydate?=?new?Date(); ????????var?weekdays?=?["星期日",?"星期一",?"星期二",?"星期三",?"星期四",?"星期五",?"星期六"]; ????????document.write(mydate.getFullYear()?+?"年" ????????????????+?mydate.getMonth()?+?"月" ????????????????+?mydate.getDate()?+?"日"?+?"?" ????????????????+?weekdays[mydate.getDay()]); ????????document.write("<br/>"); ????????//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?myarr?=?scoreStr.split(";"); ????????var?scores?=?new?Array(); ????????for?(i?=?0;?i?<?myarr.length;?i++)?{ ????????????scores[i]?=?parseInt(myarr[i].substr(3,?2)); ????????????//document.write("e");?for?test ????????} ????????//從數(shù)組中將成績撮出來，然后求和取整，并輸出。 ????????var?sum?=?0; ????????var?averg?=?0; ????????for?(i?=?0;?i?<?scores.length;?i++)?{ ????????????sum?=?sum?+?scores[i]; ????????} ????????averg?=?parseInt(sum?/?myarr.length); ????????document.write("--"?+?"班級總分為："?+?sum); ????????document.write("<br/>"); ????????document.write("--"?+?"班級平均分為："?+?averg); ????</script> </head> <body> </body> </html>你代碼的問題還不少，自己對著比較一下吧
2015-11-18
多謝大神耐心指導(dǎo)。你的代碼能跑出結(jié)果，我修改后的還是不行，奇怪！
<!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"> ??????????//通過javascript的日期對象來得到當(dāng)前的日期，并輸出。 ?????????var?mydate=new?Date(); ?????????var?weekdays=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]; ?????????document.write(mydate.getFullYear()?+?"年" ????????????????+mydate.getMonth()?+?"月" ????????????????+mydate.getDate()?+?"日"?+?"?" ????????????????+weekdays[mydate.getDay()]; ?????????? ??????????//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?myarr=scoreStr.split(";"); ??????????var?scores=new?Array(); ?????????? ??????????for(i=0;i<myarr.length;i++){ ???????????scores[i]=sparseInt(myarr[i].substr(3,2)); ???????????//document.write(scores[i]);?//for?test ??????????} ?????????? ??????????//從數(shù)組中將成績撮出來，然后求和取整，并輸出。 ??????????var?sum=0; ??????????var?averg=0; ??????????for(i=0;i<scores.length;i++){ ??????????????sum=sum+scores[i]; ??????????} ?????????? ??????????averg=parseInt(sum/myarr.length); ??????????document.write("--"+"班級總分為："+averg);? ????</script> </head> <body> </body> </html>