Check type before lowercasing to fix tagfield

[cheeweep]

No description provided.

[cheeweep]

Fixes #286

[uzquiano]

I agree this would solve for the problem where the underlying data isn't a string (in that you're checking the type ahead of calling a method that may otherwise not exist). However, isn't it a problem if the user is putting a LowerCase text field on top of a non-textual element?

Is the real objective to check whether data is undefined or null?

[cheeweep]

The real objective was to get it to work with the Tag Field. Not too sure what you meant by:

However, isn't it a problem if the user is putting a LowerCase text field on top of a non-textual element

[MaZZly]

@uzquiano could this be merged? seems to be several issues related to this.

Also I tried on sample page to set data: "test, tag" (as you said about underlying data not being string) and it then instead complains about TypeError: val.join is not a function