没有弹窗出来，求大神看看！<!DOCTYPE html><html><head> <title>编程练习</title> <script type="text/javascript"> function openWindow(){ var open=confirm("确认新建窗口打开网站吗？"); if(open==true) //新窗口打开时弹出确认框，是否打开 {var url=prompt("通过输入对话框，确定打开的窗口","http;//www.qq.com");} if{(url!null) {window.open(url,"_blank",'width=400px,height=500px,menubar=no,toolbar=no');} else{alert("再见1");} else{alert("再见2");} } </script></head><body> <input type="button" name="button" onclick="openWindow()" value="新窗口打开网站" /></body></html>
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