在线演练场

HTML/CSS/JS

CodePen - Create a New Pen

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Playground | MDN

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.

React

React Playground

URL-based React Playground. Craft, experiment, and collaborate with ease using our sandbox. Build, test, and share your concepts hassle-free. No need for sign-in: your creations are stored directly in the URL.

React Compiler Playground

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Vue

Vue SFC Playground

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Vue Template Explorer

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Vue2 SFC Playground

Opinionated Vite Starter Template

其他

Promisees · Courtesy of ponyfoo.com

暂无描述

AST explorer

An online AST explorer.

regex101: build, test, and debug regex

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

Prettier

暂无描述

ESLint Playground - ESLint - Pluggable JavaScript Linter

A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.

Tailwind Play

An advanced online playground for Tailwind CSS that lets you use all of Tailwind's build-time features directly in the browser.

Sass: Playground

Syntactically Awesome Style Sheets

Examples - Apache ECharts

Apache ECharts，一款基于JavaScript的数据可视化图表库，提供直观，生动，可交互，可个性化定制的数据可视化图表。

在线学习

英语

一日千词

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Qwerty Learner 官网 — 为键盘工作者设计的单词与肌肉记忆锻炼软件

Qwerty Learner 官方网站 - 专为键盘工作者设计的免费英语学习软件，结合打字练习与单词记忆，支持音标发音、默写模式、多样词库，高效提升英语水平和打字技能。

其他

Learn VIM while playing a game - VIM Adventures

VIM Adventures is an online game based on VIM

数学乐

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

Mock 数据

REST API

JSONPlaceholder - Free Fake REST API

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图片 API

Dog API

Dog API - The internet

The Cat API - Cat as a Service

Get free access to over 60K cat images and breed information. A fully protected and authenticated API to instantly fill your website or app with cat content.

Lorem Picsum

Lorem Ipsum... but for photos

Unsplash Image API | Free HD Photo API

Create with the largest collection of high-quality images that are free to use. Trusted by Trello, Medium, and thousands of other API applications to power their free picture needs.

CSS Snippets

CSS Elements

uiverse.io

访问 uiverse.io

92 Beautiful CSS buttons examples - CSS Scan

🎨 Curated collection of 92 free beautiful CSS buttons, ready-to-use for your next projects. Click to copy.

CSS 动画

Animista - On-Demand CSS Animations Library

Animista is a CSS animation library and a place where you can play with a collection of ready-made CSS animations and download only those you will use.

JS Snippets

You Might Not Need jQuery

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You Might Not Need Lodash

A collection of "You might not need ${something}" resources

You Might Not Need date-fns

A collection of "You might not need ${something}" resources

杂项

npm trends: Compare NPM package downloads

Which NPM package should you use? Compare packages download stats, bundle sizes, github stars and more. Spot trends, pick the winner.

Awesome JS

Find awesome package for your actual project

Component Party

Compare JavaScript frameworks side-by-side: React, Vue, Angular, Svelte, Solid.js, and more. See syntax differences, features, and code examples for web development frameworks.

IT Tools - Handy online tools for developers

Collection of handy online tools for developers, with great UX. IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.

在线转换文档，图像，视频，音频文件

在线转换PDF，在线转换文档，在线转换电子书，在线转换图像，在线转换视频，在线转换音频。

免费的背景移除工具 | Adobe Express

自动将背景从图像中移除。下载您最新的透明背景图像，更换背景，或使用Adobe Express在线背景擦除工具，创作引人注目的图形。