Counter with History - Lit Typing CST Test

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Counter with History — Lit Code

Tracks increment/decrement history.

import { LitElement, html } from 'lit';
import { customElement, state } from 'lit/decorators.js';

@customElement('lit-history-counter')
export class LitHistoryCounter extends LitElement {
	@state() count = 0;
	@state() history = [];
	render() {
		return html`<div>
		<h2>Counter: ${this.count}</h2>
		<div>History: ${this.history.join(', ')}</div>
		<button @click=${() => { this.count++; this.history = [...this.history, 'Increment']; }}>+</button>
		<button @click=${() => { this.count--; this.history = [...this.history, 'Decrement']; }}>-</button>
		<button @click=${() => { this.count = 0; this.history = [...this.history, 'Reset']; }}>Reset</button>
		</div>`;
	}
}

Lit Language Guide

Lit is a lightweight, fast, web-component-focused library for building reactive and declarative UI using standard web platform features. It emphasizes interoperability, small bundle sizes, and declarative templating with lit-html.

Primary Use Cases

▸Reusable web components
▸Design systems
▸Embeddable widgets for websites
▸Progressive enhancement projects
▸Small, high-performance UI components

Notable Features

▸Reactive properties
▸Declarative templates via lit-html
▸Scoped styles with CSS
▸Lightweight & fast
▸Full standards-compliant Web Components

Origin & Creator

Created by Google’s Polymer team, originally derived from lit-html and Polymer projects. First public release in 2019 as a modern, lightweight web component library.

Industrial Note

Lit excels in projects where web standards, framework interoperability, or lightweight, fast UI components are required, such as design systems, component libraries, and embeddable widgets.

More Lit Typing Exercises

Lit Counter Component Lit Counter with Step Increment Lit Counter with Max Limit Lit Counter with Auto-Reset Lit Counter with Dark Mode Only Lit Counter with Auto-Increment Lit Counter with Conditional Theme Lit Full Featured Counter

Practice Other Languages

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Counter with History — Lit Code

Tracks increment/decrement history.

import { LitElement, html } from 'lit'; import { customElement, state } from 'lit/decorators.js'; @customElement('lit-history-counter') export class LitHistoryCounter extends LitElement { @state() count = 0; @state() history = []; render() { return html`<div> <h2>Counter: ${this.count}</h2> <div>History: ${this.history.join(', ')}</div> <button @click=${() => { this.count++; this.history = [...this.history, 'Increment']; }}>+</button> <button @click=${() => { this.count--; this.history = [...this.history, 'Decrement']; }}>-</button> <button @click=${() => { this.count = 0; this.history = [...this.history, 'Reset']; }}>Reset</button> </div>`; } }

Lit Language Guide

Primary Use Cases

▸Reusable web components
▸Design systems
▸Embeddable widgets for websites
▸Progressive enhancement projects
▸Small, high-performance UI components

Notable Features

▸Reactive properties
▸Declarative templates via lit-html
▸Scoped styles with CSS
▸Lightweight & fast
▸Full standards-compliant Web Components

Origin & Creator

Created by Google’s Polymer team, originally derived from lit-html and Polymer projects. First public release in 2019 as a modern, lightweight web component library.

Industrial Note

Lit excels in projects where web standards, framework interoperability, or lightweight, fast UI components are required, such as design systems, component libraries, and embeddable widgets.