老师，帮我看下

来源：1-14 编程练习

goufully

2019-04-30 13:57:21

<!DOCTYPE html>
<html lang="en">
<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">
var close1 = document.getElementById("close");
var open1 = document.getElementById("open");
var imooc;
open1.onclick = function () {
imooc = window.open("http://www.imooc.com", "imooc");
}

close1.onclick=function(){
imooc.close;
}
</script>
</body>
</html>