W3C地址::::::: http://www.w3school.com.cn/jsref/met_win_confirm.asp
http://www.w3school.com.cn/tiy/t.asp?f=hdom_confirm
<html>
<head>
<script type="text/javascript">
function show_confirm()
{
var r=confirm("Press a button!");
if (r==true)
{
alert("You pressed OK!");
}
else
{
alert("You pressed Cancel!");
}
}
</script>
</head>
<body> <input type="button" onclick="show_confirm()" value="Show a confirm box" /> </body>
</html>