1<!-- 2@license 3Copyright (c) 2015 The Polymer Project Authors. All rights reserved. 4This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt 5The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt 6The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt 7Code distributed by Google as part of the polymer project is also 8subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt 9--> 10 11<link rel="import" href="../../polymer/polymer.html"> 12<link rel="import" href="../../iron-validator-behavior/iron-validator-behavior.html"> 13 14<script> 15 16 Polymer({ 17 18 is: 'letters-only', 19 20 behaviors: [ 21 Polymer.IronValidatorBehavior 22 ], 23 24 validate: function(value) { 25 return !value || value.match(/^[a-zA-Z]*$/) !== null; 26 } 27 28 }); 29 30</script> 31