<!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?dakai=confirm("確認打開新窗口？");
???????if(dakai=true){
???????????var?url=prompt("請輸入網址",?"http://www.xianlaiwan.cn/");???
???????????if(url!=null){
???????????????window.open(url,"_blank",'width=500px,height=400px,menubar=no,toolbar=no');
???????????}
???????????else{alert("bye");}
???????else{alert("bye");}
???????}
????//?通過輸入對話框，確定打開的網址，默認為?http：//www.xianlaiwan.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="新窗口打開網站"?onclick="openWindow()"?/>?
?</body>
</html>
2016-01-30
少了一個大括號，另最好
刪一個else{alert("bye");}
2016-01-30
function openWindow(){
??? var dakai=confirm("確認打開新窗口？");
?????? if(dakai=true){
?????????? var url=prompt("請輸入網址", "http://www.xianlaiwan.cn/");? ?
?????????? if(url!=null){
?????????????? window.open(url,"_blank",'width=500px,height=400px,menubar=no,toolbar=no');
?????????? }
?????????? else{alert("bye");}
?? ??? }
??? ?
?????? }