Please add a helper/hint label

[anezthes]

vaadin-text-field doesn't have a helper or hint label which makes it difficult to guide users' through forms etc.

The error-message slot could potentially be used for this purpose (when the field is not invalid).

Placeholders are simply not good enough.

[jouni]

For future reference, there’s some research suggesting that a description/help text should be placed below the label, above the field. Example

The same research suggest the same for error messages as well (place error messages above the field), linking to another research.

[rolfsmeds]

Regardless of placement, this would be super useful as an alternative to placeholders, tooltips etc, especially for mobile where tooltips are not accessible. (I've done at least a couple of custom implementations of this feature in the last three years.)

[anezthes]

@jouni for what it's worth, I agree with you regarding the helper placement.

[Haprog]

Fixed by #410 available in v2.6.0-alpha1