How to use the Playground
The WebSocket Playground lets you experiment with the browser's native WebSocket API. Edit the example code and click Run to execute it. console.log, console.error, and console.warn are captured in the output panel.
- The default example connects to
PieSocket demo server— an managed websocket server API that sends back whatever you send. - Press Ctrl+Enter to run without clicking the button.
- Press Tab inside the editor for indentation.
- Click Stop to close any active WebSocket connection.
- Click ↺ Reset to restore the default example code.
About This Tool
The WebSocket Playground is an interactive environment for experimenting with WebSocket code, right in your browser. Write and run JavaScript that opens a connection, sends messages, and reacts to events — with console output captured live in the panel next to the editor.
It's ideal for learning the WebSocket API, debugging connection behavior, or quickly prototyping client logic before wiring it into a real application — no project setup or build step required.
How to Use This Tool
Edit the code
Modify the example WebSocket code directly in the editor panel.
Click "Run" (or press Ctrl+Enter)
Your code executes in the browser with a real WebSocket connection.
Read the console output
See console.log, console.warn, and console.error output in the panel on the right.
Common Use Cases
Prototyping Client Logic: Quickly try out WebSocket event handling code before adding it to a real project.
Debugging Connection Behavior: Watch open, message, error, and close events fire in real time as you tweak the code.
Learning the WebSocket API: Experiment with the native browser WebSocket API without setting up a full project.
Validating a Server Before Integrating: Test a WebSocket endpoint's responses and message formats before writing application code around it.
Why Use This Tool
Runs Entirely in Your Browser
No server-side execution — your code runs directly in the current tab.
Captured Console Output
console.log, console.warn, and console.error are all captured in the output panel.
Persistent & Resettable
Your code is saved locally between visits, with a one-click reset to the default example.