Playcode
playcode.io
Playcode – Build apps and sites with AI
Write, run, and share JavaScript code instantly.
CodeHS
codehs.com › explore › sandbox › javascript
JavaScript Sandbox | CodeHS
Explore the CodeHS Sandbox — browse and run student-created programs in JavaScript, Python, Java, and more, all running directly in your browser without any setup required.
Videos
01:23:03
Sandboxed Javascript: Letting users run their own Javascript within ...
02:56
Why Is Your Browser The Ultimate JavaScript Sandbox? - JavaScript ...
TUTO 21: I Built a Regex Sandbox with JavaScript ...
Can I build a Code Sandbox using Web Components?!?
31:55
How to use Code Sandbox for React JS - YouTube
05:54
Getting Started with CodeSandbox Tutorial - YouTube
What makes Playcode the best?
Unlike template builders, Playcode AI creates unique sites tailored to your business. Unlike agencies, you get results in minutes, not months. And unlike other AI tools, you can see and edit the actual code. 26 million projects built since 2016.
playcode.io
playcode.io
Playcode – Build apps and sites with AI
Do I need programmers to update my site?
No. Just open Playcode and tell AI what you need. Press Publish - the change is live in seconds. No developers, no CMS admin panels, no waiting.
playcode.io
playcode.io
Playcode – Build apps and sites with AI
Can I build a website for my small business?
Absolutely. Most users are small business owners - restaurants, salons, real estate agents, coaches, consultants. Just describe your business and AI creates a professional website tailored to your industry.
playcode.io
playcode.io
Playcode – Build apps and sites with AI
CodeSandbox
codesandbox.io › s › javascript-hgzgf
JavaScript - CodeSandbox
April 1, 2020 - JavaScript by XueYingLin
JSFiddle
jsfiddle.net
JSFiddle - Code Playground
Debug your Fiddle with a minimal built-in JavaScript console.
DEV Community
dev.to › leapcell › a-deep-dive-into-javascript-sandboxing-97b
A Deep Dive into JavaScript Sandboxing - DEV Community
February 1, 2025 - In browsers, a sandbox usually refers to the isolated environment provided by the browser for each tab. This isolation ensures that JavaScript code in one tab cannot access content in another tab unless the two pages follow the same-origin policy (i.e., having the same protocol, domain, and port) or explicitly allow cross-origin access via CORS (Cross-Origin Resource Sharing).
RunJS
runjs.app › play
Online JavaScript Playground
An easy-to-use online JavaScript playground with live feedback. Write and run JavaScript instantly. Great for learning and prototyping.
Andrew Healey
healeycodes.com › sandboxing-javascript-code
Sandboxing JavaScript Code — Andrew Healey
February 12, 2023 - Isolates allow you to run multiple, isolated instances of JavaScript code in a single process. Each Isolate is a separate instance of the V8 engine, with its own memory heap, garbage collector, and JavaScript context. Letting you run code in a sandboxed environment.
Medium
leapcell.medium.com › a-deep-dive-into-javascript-sandboxing-bbb0773a8633
A Deep Dive into JavaScript Sandboxing | by Leapcell | Medium
February 1, 2025 - In browsers, a sandbox usually refers to the isolated environment provided by the browser for each tab. This isolation ensures that JavaScript code in one tab cannot access content in another tab unless the two pages follow the same-origin policy (i.e., having the same protocol, domain, and port) or explicitly allow cross-origin access via CORS (Cross-Origin Resource Sharing).
CodeSandbox
codesandbox.io
CodeSandbox: Instant Cloud Development Environments
Use our APIs to create isolated development environments (sandboxes) that can run any type of code you need.
GitHub
github.com › TooTallNate › SandboxJS
GitHub - TooTallNate/SandboxJS: JavaScript "Sandboxes" for the web browser. · GitHub
Defining custom JavaScript environments (APIs), then loading external script files that interact with the custom API (abstracting the browser/DOM away). ... Creates and returns new Sandbox instance. The bare parameter defaults to true, and determines whether or not the sandbox environment should attempt to have all it's extraneous browser/DOM objects removed from the scope.
Starred by 36 users
Forked by 3 users
Languages JavaScript
Eloquent JavaScript
eloquentjavascript.net › code
Eloquent JavaScript :: Code Sandbox
You can use this page to download source code and solutions to exercises for the book Eloquent JavaScript, and to directly run code in the context of chapters from that book, either to solve exercises to simply play around · If you've solved the exercise and want to compare your code with ...
GitHub
github.com › bradtraversy › javascript-sandbox
GitHub - bradtraversy/javascript-sandbox: Sandbox from the Modern JS From The Beginning 2.0 course · GitHub
There is a folder called "javascript-sandbox-start", which contains the starter files for the learning modules and any themes (HTML/CSS) for the projects.
Starred by 483 users
Forked by 509 users
Languages JavaScript 69.8% | HTML 14.2% | CSS 10.0% | SCSS 6.0%
Google
developers.google.com › tag platform › tag manager › templates › sandboxed javascript
Sandboxed JavaScript | Google Tag Manager Templates | Google for Developers
The provided sample demonstrates ... JavaScript is a simplified subset of the JavaScript language that provides a safe way to execute arbitrary JavaScript logic from Google Tag Manager's custom templates....
Openexchangerates
openexchangerates.github.io › javascript-sandbox-console
javascript sandbox console demo
The js sandbox console is a javascript playground designed to enhance demos and homepages for javascript libraries, plugins and scripts, giving visitors an easy and chilled-out way to test-drive the functionality.
CodeSandbox
codesandbox.io › s › htmlcssjs-umxsy
HTML/CSS/JS - CodeSandbox
January 30, 2020 - HTML/CSS/JS by spinetree
OneCompiler
onecompiler.com › javascript › 3xs9n3n6g
sandbox - JavaScript - OneCompiler
The editor shows sample boilerplate code when you choose language as Javascript and start coding.
Top answer 1 of 15
55
Google Caja is a source-to-source translator that "allows you to put untrusted third-party HTML and JavaScript inline in your page and still be secure."
2 of 15
32
Have a look at Douglas Crockford's ADsafe:
ADsafe makes it safe to put guest code (such as third party scripted advertising or widgets) on any web page. ADsafe defines a subset of JavaScript that is powerful enough to allow guest code to perform valuable interactions, while at the same time preventing malicious or accidental damage or intrusion. The ADsafe subset can be verified mechanically by tools like JSLint so that no human inspection is necessary to review guest code for safety. The ADsafe subset also enforces good coding practices, increasing the likelihood that guest code will run correctly.
You can see an example of how to use ADsafe by looking at the template.html and template.js files in the project's GitHub repository.
GitHub
github.com › nyariv › SandboxJS
GitHub - nyariv/SandboxJS: Safe eval runtime · GitHub
This is a javascript sandboxing library.
Starred by 208 users
Forked by 17 users
Languages TypeScript 87.9% | JavaScript 8.0% | CSS 3.0% | HTML 1.1%
JS Playground
jsplayground.dev
JS Playground — A no-fuss JavaScript playground with instant feedback
It is a web application that provides a minimal and fast JavaScript playground for free. You can think of it as a tiny editor for you to quickly test any JavaScript supported by your browser. It works pretty much as a REPL, where you are given instant feedback on the Console screen as you change ...
CodeHS
codehs.com › explore › sandbox
Sandbox | CodeHS
Explore the CodeHS Sandbox — browse and run student-created programs in JavaScript, Python, Java, and more, all running directly in your browser without any setup required.