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<html>
<head>
<title>成绩系统的输入</title>
<meta name="author" content="彭阳">
<meta name="keyword" content="彭阳">
<meta name="description" content="网页模板" >
<meta http-equiv="content-Type content="text/html";charset="gb2312">
<style type="text/css">
td{
width:100px;
font-size:12px;
heigh:20px;
text-align:center;
}
</style>
</head>
<body>
<script>
alert("友情提示: 请输入的成绩为数值，否则会停留在出错处!");
var i=0;sum=0;avg=0;
var name1=new Array("李丽","王明","周珊");
var km=new Array("英语","高数","动态脚本");
document.write("<table width=\"500px\" border=\"1\" cellpading=\"0\""+"cellspacing=\"0\" align=\"center\">
<tr><td>姓名</td>");
for(n in km){
document.write("<td>"+km[n]+"</td>");
}
document.write("<td>总分</td><td>平均分</td><td>等级</td></tr>");
for(n in name1){
document.write("<tr><td>"+name1[n]+"</td>");
while(i<km.length){
ts="输入"+name1[n]+"的"+km[i]+"成绩:"；
var record=parseFloat(prompt(ts,""));
if (isNaN(record)||(record<0)||(record>100)){
alert("你输入的数值为"+record+",不合法，请重新输入");
continue;
}
document.write("<td>"+record+"</td>");
i++;
sum=sum+record;
}
document.write("<td>"+sum+"</td>");
avg=Math.round(sum/km.length);
document.write("<td>"+avg+"</td>");
if(avg<60)
document.write("<td>不合格</td>");
else if(avg>=60&&avg<70)
document.write("<td>及格</td>");
else if(avg>=70&&avg<80)
document.write("<td>中等</td>");
else if(avg>=80&&avg<90)
document.write("<td>良好</td>");
else if(avg>=90&&avg<100)
document.write("<td>优秀</td>");
document.write("</tr>");
i=0;
sum=0;
}
document.write("</table>");
</script>
</body>
</html>
<head>
<title>成绩系统的输入</title>
<meta name="author" content="彭阳">
<meta name="keyword" content="彭阳">
<meta name="description" content="网页模板" >
<meta http-equiv="content-Type content="text/html";charset="gb2312">
<style type="text/css">
td{
width:100px;
font-size:12px;
heigh:20px;
text-align:center;
}
</style>
</head>
<body>
<script>
alert("友情提示: 请输入的成绩为数值，否则会停留在出错处!");
var i=0;sum=0;avg=0;
var name1=new Array("李丽","王明","周珊");
var km=new Array("英语","高数","动态脚本");
document.write("<table width=\"500px\" border=\"1\" cellpading=\"0\""+"cellspacing=\"0\" align=\"center\">
<tr><td>姓名</td>");
for(n in km){
document.write("<td>"+km[n]+"</td>");
}
document.write("<td>总分</td><td>平均分</td><td>等级</td></tr>");
for(n in name1){
document.write("<tr><td>"+name1[n]+"</td>");
while(i<km.length){
ts="输入"+name1[n]+"的"+km[i]+"成绩:"；
var record=parseFloat(prompt(ts,""));
if (isNaN(record)||(record<0)||(record>100)){
alert("你输入的数值为"+record+",不合法，请重新输入");
continue;
}
document.write("<td>"+record+"</td>");
i++;
sum=sum+record;
}
document.write("<td>"+sum+"</td>");
avg=Math.round(sum/km.length);
document.write("<td>"+avg+"</td>");
if(avg<60)
document.write("<td>不合格</td>");
else if(avg>=60&&avg<70)
document.write("<td>及格</td>");
else if(avg>=70&&avg<80)
document.write("<td>中等</td>");
else if(avg>=80&&avg<90)
document.write("<td>良好</td>");
else if(avg>=90&&avg<100)
document.write("<td>优秀</td>");
document.write("</tr>");
i=0;
sum=0;
}
document.write("</table>");
</script>
</body>
</html>
