<html>
<head>
<script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.3/dist/global/Rx.umd.js"></script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
</body>
</html>
console.clear();
const { Observable } = Rx;
/** A really, really, really fake websocket */
class FakeWebSocket {
constructor(url) {
this.url = url;
console.log('connecting to ' + url);
let i = 0;
this.id = setInterval(() => this.triggerMessage(i++), 500);
}
close() {
console.log('closing connection to ' + this.url);
clearInterval(this.id);
}
addEventListener(name, handler) {
const listeners = this.listeners = this.listeners || {};
const handlers = listeners[name] = listeners[name] || [];
handlers.push(handler);
}
addEventListener(name, handler) {
const listeners = this.listeners = this.listeners || {};
const handlers = listeners[name] = listeners[name] || [];
handlers.push(handler);
}
triggerMessage(msg) {
const listeners = this.listeners;
if (listeners) {
const handlers = listeners['message'];
handlers.forEach(handler => handler({ target: this, data: JSON.stringify(msg) }))
}
}
}
const source = new Observable((observer) => {
const socket = new FakeWebSocket('ws://someurl');
socket.addEventListener('message', (e) => observer.next(e));
return () => socket.close();
});
/**
* Notice in console that two connections are made
*/
// first connection
source.subscribe((e) => console.log('s1', e));
// second connection one second later
setTimeout(() => {
source.subscribe((e) => console.log('s2', e));
}, 1000);
// since it's a "cold" observable, a new connection is created
// each time you subscribe to the same observable.
// (aka, each time you call the function,
// since observables are just functions)
Output
300px
You can jump to the latest bin by adding /latest
to your URL
Keyboard Shortcuts
Shortcut | Action |
---|---|
ctrl + [num] | Toggle nth panel |
ctrl + 0 | Close focused panel |
ctrl + enter | Re-render output. If console visible: run JS in console |
Ctrl + l | Clear the console |
ctrl + / | Toggle comment on selected lines |
ctrl + ] | Indents selected lines |
ctrl + [ | Unindents selected lines |
tab | Code complete & Emmet expand |
ctrl + shift + L | Beautify code in active panel |
ctrl + s | Save & lock current Bin from further changes |
ctrl + shift + s | Open the share options |
ctrl + y | Archive Bin |
Complete list of JS Bin shortcuts |
JS Bin URLs
URL | Action |
---|---|
/ | Show the full rendered output. This content will update in real time as it's updated from the /edit url. |
/edit | Edit the current bin |
/watch | Follow a Code Casting session |
/embed | Create an embeddable version of the bin |
/latest | Load the very latest bin (/latest goes in place of the revision) |
/[username]/last | View the last edited bin for this user |
/[username]/last/edit | Edit the last edited bin for this user |
/[username]/last/watch | Follow the Code Casting session for the latest bin for this user |
/quiet | Remove analytics and edit button from rendered output |
.js | Load only the JavaScript for a bin |
.css | Load only the CSS for a bin |
Except for username prefixed urls, the url may start with http://jsbin.com/abc and the url fragments can be added to the url to view it differently. |