isEmpty() doesn't support numeric model values

[avaragado]

I have a selectize component with the required attribute set. This means isEmpty is called on validation to check whether the model has a value or not.

If the model value is numeric (eg set programmatically rather than by user selection), the isEmpty test fails as numbers don't have a length property.

[PhiLhoSoft]

Yes, at long least, the lazy !val.length should be val.length === 0...