<!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 date = 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"];
document.write(date.getFullYear()+"年");
document.write(date.getMonth()+1+"月");
document.write(date.getDate()+"日");
document.write(" "+weekday[date.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 arr=scoreStr.split(";");
//从数组中将成绩撮出来,然后求和取整,并输出。
var sum=0;
for(var i=0;i<arr.length;i++){
sum=sum+parseInt(arr[i].substr(3));
}
document.write("班级平均分为:"+Math.floor(sum/arr.length));
</script>
</head>
<body>
</body>
</html>
<!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 mydate = new Date(); var year = mydate.getFullYear() var month = mydate.getMonth() switch(month){ case 0: month = '01'; break; case 1: month = '02'; break; case 2: month = '03'; break; case 3: month = '04'; break; default: month = '获取的月份不存在'; }; var day = mydate.getDate(); var hourse = mydate.getHours(); var minutes = mydate.getMinutes(); var seconds = mydate.getSeconds(); document.write(year+'年'+month+'月'+day+'日'+hourse+'点'+minutes+'分'+seconds+'秒'+'<br/>') //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 myarr = scoreStr.split(';'); document.write(myarr+'<br/>'); var sum = 0; for(var i = 0; i<myarr.length; i++){ var str = myarr[i].toString() sum += parseInt(str.substring(3)); } var verage = parseInt(sum / myarr.length) document.write(verage) //从数组中将成绩撮出来,然后求和取整,并输出。 </script></head><body></body></html>