<!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 yourconfirm = confirm("是否打开");
if(yourconfirm==true){
var yourprompt = prompt("你的网址", 'http：//www.imooc.com/')
if (yourprompt != null){
window.open(yourprompt,"blank","width=400,height=500,menubar=no,toolbar=no")}
else{}}
else{}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>http后面的冒号用英文输入
thank u