Display error message. Returns undefined.

Description

This method displays the error message and emits .onError event. If you have following form: let form = new w2form({ name : 'form', formURL : '/server/path', fields: [ { field: 'first_name', type: 'text', required: true }, { field: 'last_name', type: 'text', required: true }, { field: 'email', type: 'email' } ] }); You can w2ui.form.error('Some error.');