<!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"> //通过javascript的日期对象来得到当前的日期,并输出。 var currentdate = new Date(); var weekday=["星期天","星期一","星期二","星期三","星期四","星期五","星期六"]; document.write( currentdate.getFullYear() +"年"+ currentdate.getMonth()+"月"+ weekday[currentdate.getDay()] ); //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 score = scoreStr.split(";"); var sum=0; for(var i=0;i<score.length;i++){ sum += parseInt(score[i].substr(3)); } document.write(sum/score.length); //从数组中将成绩撮出来,然后求和取整,并输出。 </script> </head> <body> </body> </html>
为什么显示不出来呢?
var weekday=["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];中星期一后面的逗号。
要会调试