                        課程
                    
                        /前端開發(fā)
                        
                            /JavaScript
                        
                        /JavaScript入門篇

請問一下，怎么打不開網(wǎng)頁。

<!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?co=confirm("新窗口是否打開?")
???????if(co==true)
???????{
???????????var?pr=prompt("確定打開網(wǎng)址","http://idcbgp.cn/");
???????????if(pr!=null)
???????????{
??????????????Window.open(pr,"_blank",'width=400','height=500','menubar=no','toolbar=no');
???????????}
???????????else
???????????{
???????????????alert("再見");
???????????}
???????}
??????else
??????{
??????????alert("再見");
??????}
????}
????//?新窗口打開時(shí)彈出確認(rèn)框，是否打開
????//?通過輸入對話框，確定打開的網(wǎng)址，默認(rèn)為?http：//idcbgp.cn/
????//打開的窗口要求，寬400像素，高500像素，無菜單欄、無工具欄。
????
????
??</script>?
?</head>?
?<body>?
???<input?type="button"?value="新窗口打開網(wǎng)站"?onclick="openWindow()"?/>?
?</body>
</html>