Add slot for displaying text or component related to field.
Baseline implementation has been done for vaadin-text-field. See https://github.com/vaadin/vaadin-text-field/pull/410/
All implementations should follow the baseline implementation to achieve the same functionality.
Requirements
Add helper-text part which contains slot helper
Add observer to add has-helper attribute when helperText property is set
Add slotchange event handler to add has-helper attribute when content placed in helper slot
Add helper text to aria-describedby
Add observer for error message to add has-error-message attribute (used to hide helper in material theme when error message is set)
Add slot for displaying text or component related to field. Baseline implementation has been done for vaadin-text-field. See https://github.com/vaadin/vaadin-text-field/pull/410/ All implementations should follow the baseline implementation to achieve the same functionality.
Requirements
helper-textpart which contains slothelperhas-helperattribute whenhelperTextproperty is sethas-helperattribute when content placed in helper slotaria-describedbyhas-error-messageattribute (used to hide helper in material theme when error message is set)Visual specifications