老师帮我看下我的问题出在哪了

来源：1-15 编程练习

慕少8534263

2020-05-14 21:02:44

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>打开/关闭页面</title>
    </head>
    <body>
       <input type="button" name="" value="打开页面" id="btn">
       <script type="text/javascript">
           //补充代码
           var btn=document.getElementById("btn");
           btn.onclick=function(){
               var yesornot=confirm("是否打开页面");
               if(yesornot){
                   window.open("newPage.html","newPage","width:300,height:300,top:200,left:600,toolbar=no,menubar=no,scrollbars=no,location=no,status=no")
               }else{
                   window.close();
               }
           }
       </script>
    </body>
</html>

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