Uncaught TypeError: Function.prototype.toString requires that 'this' be a Function

[Sylor-huang]

@Houfeng 感谢分享，然后我在web上调用的时候，出现这个错误，请问是怎么回事呢？非常感谢~

错误提示： Uncaught TypeError: Function.prototype.toString requires that 'this' be a Function

调用代码：

<textarea name="editor" id="editor"></textarea>
<script>
    //获取textarea dom对象
    var ele_textarea = document.getElementById('editor');
    //实例化Mditor
    var editor = new Mditor(ele_textarea);

</script>