麻烦帮我看下哪里错了

来源：1-14 编程练习

weixin_慕用5152390

2019-08-16 08:13:49

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>打开/关闭页面</title>
    </head>
    <body>
       <input type="button" value="关闭本页面" id="close">
       <input type="button" value="打开慕课网" id="open">
       <script type="text/javascript">
           //补充代码
         var btn1=document.getElementById("open");
         var btn2=document.getElementById("close");
           btn1.onlick=function(){
            window.open("http://www.imooc.com");           }
           btn2.onlick=function(){
            close()
           }       </script>
    </body>
</html>