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89 lines
1.8 KiB
89 lines
1.8 KiB
4 years ago
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# tiny-emitter
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A tiny (less than 1k) event emitter library.
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## Install
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### npm
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```
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npm install tiny-emitter --save
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```
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## Usage
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```js
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var Emitter = require('tiny-emitter');
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var emitter = new Emitter();
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emitter.on('some-event', function (arg1, arg2, arg3) {
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//
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});
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emitter.emit('some-event', 'arg1 value', 'arg2 value', 'arg3 value');
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```
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Alternatively, you can skip the initialization step by requiring `tiny-emitter/instance` instead. This pulls in an already initialized emitter.
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```js
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var emitter = require('tiny-emitter/instance');
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emitter.on('some-event', function (arg1, arg2, arg3) {
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//
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});
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emitter.emit('some-event', 'arg1 value', 'arg2 value', 'arg3 value');
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```
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## Instance Methods
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### on(event, callback[, context])
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Subscribe to an event
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* `event` - the name of the event to subscribe to
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* `callback` - the function to call when event is emitted
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* `context` - (OPTIONAL) - the context to bind the event callback to
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### once(event, callback[, context])
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Subscribe to an event only **once**
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* `event` - the name of the event to subscribe to
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* `callback` - the function to call when event is emitted
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* `context` - (OPTIONAL) - the context to bind the event callback to
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### off(event[, callback])
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Unsubscribe from an event or all events. If no callback is provided, it unsubscribes you from all events.
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* `event` - the name of the event to unsubscribe from
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* `callback` - the function used when binding to the event
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### emit(event[, arguments...])
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Trigger a named event
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* `event` - the event name to emit
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* `arguments...` - any number of arguments to pass to the event subscribers
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## Test and Build
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Build (Tests, Browserifies, and minifies)
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```
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npm install
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npm run build
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```
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Test
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```
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npm install
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npm test
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```
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## License
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[MIT](https://github.com/scottcorgan/tiny-emitter/blob/master/LICENSE)
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