custom-elements | Vaadin

Toggle switch custom element

npm version License Published on


Custom element toggle-switch designed to act like a checkbox. Includes accessibility features.



Install via npm with npm install last-toggle-switch --save.

If you're using a module bundler simply import "last-toggle-switch".

Alternatively you can include it via a script tag:

<script src="node_modules/last-toggle-switch/dist/ToggleSwitch.dist.js"></script>

Depending upon your browser support requirements, you may need to include one or more Web Component polyfills.


<toggle-switch>Label text</toggle-switch>

<!-- Can be checked or disabled by default, just like a regular input -->
<toggle-switch checked disabled>Label text</toggle-switch>


Here are the custom properties available, along with their initial values, which enable you to style the shadow DOM.

--toggle-switch-disabled-opacity: 0.5;
--toggle-switch-toggle-duration: 0.3s;

--toggle-switch-track-color: #cecece;
--toggle-switch-track-shadow: none;
--toggle-switch-track-border: none;
--toggle-switch-track-height: 75%;

--toggle-switch-knob-color: #333333;
--toggle-switch-knob-shadow: none;
--toggle-switch-knob-border: none;


The element itself emits a change event when the checked property changes.

document.querySelector('toggle-switch').addEventListener('change', (event) => {

Example implementation:

<script src="node_modules/last-toggle-switch/dist/ToggleSwitch.dist.js"></script>

<toggle-switch>Toggle Switch</toggle-switch>

    toggle-switch {
        --toggle-switch-track-color: #e8e2e2;
        --toggle-switch-knob-color: rebeccapurple;
        --toggle-switch-toggle-duration: 0.15s;
        color: #262626;
        transition: color 0.3s;
    toggle-switch[checked] {
        --toggle-switch-track-color: #dfc5e6;
    toggle-switch:focus {
        outline: none;
        color: rebeccapurple;


# installation
npm install

# dev mode
npm run dev

# build production
npm run build


Link to this version
ImportedReleased 02 January 2019Apache License 2.0
Framework Support
Browser Independent
Install with
npm install last-toggle-switch"@1.0.9"
Run the above npm command in your project folder. If you have any issues installing, please contact the author.
Release notes - Version 1.0.9


  • @polymer/lit-element#^0.6.5