Common behaviors used across paper-* elements.

Published on NPM Build status Published on


<paper-behaviors> is a set of behaviours to help implement Material Design elements:

  • PaperCheckedElementBehavior to implement a custom element that has a checked property similar to IronCheckedElementBehavior and is compatible with having a ripple effect.
  • PaperInkyFocusBehavior implements a ripple when the element has keyboard focus.
  • PaperRippleBehavior dynamically implements a ripple when the element has focus via pointer or keyboard. This behavior is intended to be used in conjunction with and after IronButtonState and IronControlState.

See: Documentation, Demo.



npm install --save @polymer/paper-behaviors

Example of using one of the behaviours in a Polymer 3 element

import {PolymerElement, html} from '@polymer/polymer';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.js';
import {PaperButtonBehavior} from '@polymer/paper-behaviors/paper-button-behavior.js';

class SampleElement extends mixinBehaviors([PaperButtonBehavior], PolymerElement) {
  static get template() {
    return html`
        :host {
          display: block;
        /* Some properties inherited from the behaviour */
        :host([disabled]) {
          background-color: grey;
          pointer-events: none;
        :host([pressed]) {
          background-color: blue;
      <div>I am a ripple-y button</div>
customElements.define('sample-element', SampleElement);


If you want to send a PR to this element, here are the instructions for running the tests and demo locally:


git clone
cd paper-behaviors
npm install
npm install -g polymer-cli

Running the demo locally

polymer serve --npm

Running the tests

polymer test --npm


Link to this version
ImportedReleased 14 September 2018BSD 3-clause "New" or "Revised" License
Framework Support
Polymer 3.0+
Also supported:
Polymer 1 (1.0.13)Polymer 2 (2.1.1)
Browser Independent
Install with
npm install @polymer/paper-behaviors"@3.0.1"
Run the above npm command in your project folder. If you have any issues installing, please contact the author.
Release notes - Version 3.0.1


  • @polymer/iron-behaviors#^3.0.0-pre.26
  • @polymer/iron-checked-element-behavior#^3.0.0-pre.26
  • @polymer/paper-ripple#^3.0.0-pre.26
  • @polymer/polymer#^3.0.0