<!DOCTYPE html>
<html>
<head>
<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk"/>
<script type="text/javascript">
function openWindow(){
var open = confirm("是否要打开窗口？");
if(open==true){
var url = prompt("要打开这个网站吗？","http://www.imooc.com");
if(url!=null){
window.open(url,"_blank",width=400,height=500,menubar=no,toolbar=no);
}else{
alert("goodbye!!"); }
}else{
alert("goodbye!"); }
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
