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@lion/switch
Advanced tools
lion-switch
is a component that is used to toggle a property or feature on or off. Toggling the component on or off should have immediate action and should not require pressing any additional buttons (submit) to confirm what just happened. The Switch is not a Checkbox in disguise and should not be used as part of a form.
import { html } from 'lit-html';
import { Validator } from '@lion/form-core';
import { LionSwitch } from './index.js';
import './lion-switch.js';
import '@lion/helpers/sb-action-logger.js';
export default {
title: 'Buttons/Switch',
};
export const main = () => html` <lion-switch label="Label" help-text="Help text"></lion-switch> `;
checked
boolean attributechecked
boolean attributechoiceValue()
npm i --save @lion/switch
import { LionSwitch } from '@lion/switch';
// or
import '@lion/switch/lion-switch.js';
<lion-switch name="airplaneMode" label="Airplane mode" checked></lion-switch>
You can disable switches.
export const disabled = () => html` <lion-switch label="Label" disabled></lion-switch> `;
Simple example that illustrates where validation feedback will be displayed.
export const validation = () => {
const IsTrue = class extends Validator {
static get validatorName() {
return 'IsTrue';
}
execute(value) {
return !value.checked;
}
static async getMessage() {
return "You won't get the latest news!";
}
};
const tagName = 'custom-switch';
if (!customElements.get(tagName)) {
customElements.define(
tagName,
class CustomSwitch extends LionSwitch {
static get validationTypes() {
return [...super.validationTypes, 'info'];
}
},
);
}
return html`
<custom-switch
id="newsletterCheck"
name="newsletterCheck"
label="Subscribe to newsletter"
.validators="${[new IsTrue(null, { type: 'info' })]}"
></custom-switch>
`;
};
You can listen for a checked-changed
event that is fired when the switch is clicked.
export const handler = () => {
const uid = Math.random().toString(36).substr(2, 10);
return html`
<lion-switch
label="Label"
@checked-changed="${e => {
document.getElementById(`logger-${uid}`).log(`Current value: ${e.target.checked}`);
}}"
>
</lion-switch>
<sb-action-logger id="logger-${uid}"></sb-action-logger>
`;
};
FAQs
A Switch is used for switching a property or feature on and off
The npm package @lion/switch receives a total of 196 weekly downloads. As such, @lion/switch popularity was classified as not popular.
We found that @lion/switch demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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