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<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();
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(mydate.getFullYear()+"年"+mydate.getMonth()+"月"+mydate.getDate()+"日"+weekday[mydate.getDay()]+"--班级总分为:"+result)
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 myarray=scoreStr.split(";")
for(var i=0;i<myarray.length;i++){
var a=myarray[i].substring(3);
var sum=0;
sum=sum+parseInt(a);
}
var average=sum/myarray.length
var result=Math.round(average);
</script>
</head>
<body>
</body>
</html>
系统的月份是从1月份开始计算的,而使用date()获取的月份下标从0开始,document.write(mydate.getFullYear()+"年"+(mydate.getMonth()+1)+"月"+mydate.getDate()+"日"+weekday[mydate.getDay()]+"--班级总分为:"+result);这样才能计算出相同的月份数。
var mydate= new Date(); var myMonth = mydate.getMonth() +1;//Date对象的月份方法得到的当前的系统的月份值是从0-11,所以要+1
月份下标从0开始的,要加1.