# reopenClass method can not pass attribute named name of it? **URL:** \ **Category:** Uncategorized\ **Created:** [March 18, 2016, 7:31am UTC](https://discuss.emberjs.com/t/reopenclass-method-can-not-pass-attribute-named-name-of-it/10189 "2016-03-18T07:31:09Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ubuntuvim](https://avatars.discourse-cdn.com/v4/letter/u/a4c791/32.png) [@ubuntuvim](https://discuss.emberjs.com/u/ubuntuvim)\ **Post date:** [March 18, 2016, 7:31am UTC](https://discuss.emberjs.com/t/reopenclass-method-can-not-pass-attribute-named-name-of-it/10189/1 "2016-03-18T07:31:09Z")
I am learning to use `reopenClass` method when I was introduced to a property called `name`, but when I run the code when an error occurs, the following error message, but I changed the name of another property, but no problem. I find this method of API, we did not see the instructions. I guess the name is not the method `reopenClass` reserved keywords? **Error message** ```auto ember.debug.js:18772 Uncaught TypeError: Cannot assign to read only property 'name' of function 'function () { if (!wasApplied) { Class.proto(); // prepare prototype... } if (argume...... }' ``` **This is my code** ```nohighlight Ember.js • Guides ``` [reopenClass method API](http://emberjs.com/api/classes/Ember.Object.html#method_reopenClass) I hope you read the description, look forward to your reply. thanks !! ---
**Author:** ![jasonmit](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/jasonmit/32/182_2.png) [@jasonmit](https://discuss.emberjs.com/u/jasonmit)\ **Post date:** [March 18, 2016, 9:59pm UTC](https://discuss.emberjs.com/t/reopenclass-method-can-not-pass-attribute-named-name-of-it/10189/2 "2016-03-18T21:59:40Z")
It collides with [Function.prototype.name - JavaScript | MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name) Perhaps a more friendly error explaining this nuance would be better. ---
**Author:** ![ubuntuvim](https://avatars.discourse-cdn.com/v4/letter/u/a4c791/32.png) [@ubuntuvim](https://discuss.emberjs.com/u/ubuntuvim)\ **Post date:** [March 20, 2016, 5:16pm UTC](https://discuss.emberjs.com/t/reopenclass-method-can-not-pass-attribute-named-name-of-it/10189/3 "2016-03-20T17:16:23Z")
Oh,this is the original, thank you for your answer!🙂