大神们，看看我写的代码对吗？为啥出不来结果？
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
<script type="text/javascript">
var main = document.body;
//创建链接
function createa(url,text)
{
var lianjie = document.createElement("a");
lianjie.setAttribute("href","http://www.imooc.com");
lianjie.setAttribute("text","慕课网");
lianjie.setAttribute("onclick","createa(url,text)");
}
// 调用函数创建链接
main.appendChild(lianjie);
</script>
</body>
</html>
