<!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 massage=confirm("是否打开新窗口？");
if(massage==true){
var url=prompt("通过输入对话框确定打开的网址"，"http：//www.imooc.com");
if(url!=null){
window.open(url,"_blank","width=400,height=500,menubar=no,toolbar=no");
}else{
alert("再见");
}
}else{
alert("再见");
}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
