<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script type="text/javascript">
var score = prompt("请输入！");
var res;
if(score == ""){
res = "填写!";
}else if(score == null){
res = "取消按钮";
}else{
var fenshu = Number(score);
if(fenshu>=0 && fenshu<=100){
if(fenshu >=90){
res = "优秀";
}else if(fenshu >=80){
res = "良好";
}else if(fenshu >=70){
res = "中等";
}else if(fenshu >=60){
res = "及格";
}else{
res = "不及格！";
}
}else{
res = "用户输入数据不合法";
}
}
alert(res);
</script>
</body>
<body>
<script type="text/javascript">
for(var ji=1;ji<35;ji++){
var tu = 35-ji;
if(ji*2 + tu*4 == 94){
document.write("鸡"+ji+""+"兔子"+tu);
}
}
</script>
</body>
</html>
时间： 2024-12-23 11:06:04