请问有人会第3第4个问题吗
这样吗？帮助到你可以点击采纳支持下哦，谢谢
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>成绩</title>
</head>
<body>
<script type="text/javascript">var date; date = new Date(); document.write("现在是：" + date.getHours() + "时" + date.getMinutes() + "分" + date.getSeconds() + "秒");</script>
<br />
<br /> 姓名 数学 语文 英语
<hr />
<div id="dvRst"></div>
<input type="button" value="重新筛选" onclick="getUser()" />
<script type="text/javascript">
var students, i, j;
students = new Array();
students[0] = new Array("张三", 76, 90, 80);
students[1] = new Array("李四", 89, 97, 86);
students[2] = new Array("王五", 90, 78, 88);
students[3] = new Array("赵六", 77, 78, 79);
students[4] = new Array("孙七", 75, 88, 91);
students[5] = new Array("周八", 65, 70, 82);
students[6] = new Array("吴九", 60, 73, 84);
students[7] = new Array("郑十", 68, 76, 80);
students[8] = new Array("刘一", 70, 73, 77);
students[9] = new Array("陈二", 61, 63, 70);
function getUser() {
var a, i;
a = prompt("请输入您的姓氏:", "");
a = a.toUpperCase();
var s = '';
for (i = students.length - 1; i >= 0; i--) {
if (students[i][0].indexOf(a) != -1) {
for (j in students[i]) {
s += students[i][j] + "\t";
}
}
}
document.getElementById('dvRst').innerHTML = s;
}
getUser();
</script>
</body>
</html>
在body里面增加onload事件，写个函数使用confirm对话框就可以了。
这个不难啊，你用什么做的？
