满足绝大部分情况事件驱动的情况,适合用于处理各种事件流,简单、轻量 (gzip 2kb) 的 JS 库。
对于各种组件系统的框架,如:React、Vue.js 等等,非父子组件之间的通讯是一件麻烦的事情,但通过使用 flowhub 会变得轻松简单。
npm i flowhub --save
或者
<script src="https://cdn.jsdelivr.net/npm/flowhub/dist/flowhub.min.js"></script>
import $hub from 'flowhub';
// 注册监听者
$hub.on('test', data => console.log('test', data))
setInterval(() => {
// 发送 'test' 事件
$hub.emit('test', { code: 1 })
}, 1000)
const listener = $hub.on('test', data => console.log(data))
$hub.emit('test', { code: 1 })
listener.off()
// 或者
// $hub.off('test', listener)
$hub.emit('test', { code: 2 })
const listener = $hub.once('test', data => console.log(data))
$hub.emit('test', { code: 1 })
$hub.emit('test', { code: 2 })
const listener = $hub.on(['test', 'test-1', 'test-2'], data => console.log(data))
$hub.emit(['test', 'test-1', 'test-2'], { code: 1 })
listener.off()
// 或者
// $hub.off(['test', 'test-1' ], listener)
$hub.emit(['test', 'test-1', 'test-2'], { code: 2 })
注意,监听者会接收到每次适配到的事件源发生。例如上述例子,则会产生三条日志。
// 设置 store 值
$hub.store.code = 1
// 监听 store 里具体 某个数值
// 若 这个数值已存在 “当前值”,则监听成功后,立即返回 “当前值”,就像 Rx.BehaviorSubject
$hub.on('@store/code', data => console.log('store code', data))
setInterval(() => {
++$hub.store.code
// 或者
// $hub.emit('@store/code', 1)
}, 1000)
const dispatcher = $hub.DOM('button')
.from('click')
.emit('dom-click-event')
.from('mousedown')
.emit('dom-mousedown-event')
$hub.on('dom-click-event', event => console.log('button click', event))
$hub.on('dom-mousedown-event', event => console.log('button mousedown', event))
setTimeout(dispatcher.off, 10000)
const dispatcher = $hub.Fetch('https://xxxxx')
.emit('fetch-event1')
.emit('fetch-event2')
setTimeout(dispatcher.reload, 2000)
$hub.on('fetch-event1', result => console.log('fetch1', result))
$hub.on('fetch-event2', result => console.log('fetch2', result))
const dispatcher = $hub.WS('ws://xxxxx')
.emit('ws-event1')
.emit('ws-event2')
$hub.on('ws-event1', result => console.log('ws1: ', result))
$hub.on('ws-event2', result => console.log('ws2: ', result))
setTimeout(dispatcher.off, 3000)
<script src="./lib/socket.io.min.js"></script>
<script>
const dispatcher = $hub.IO('http://xxxxx')
.from('mock')
.emit('io-event')
dispatcher.socket.emit('mock', { key: 'xxxxx' })
$hub.on('io-event', result => console.log('io:', result))
setTimeout(dispatcher.off, 3000)
</script>
$hub.chain('test')
.pipe(
d => new Promise(resolve => setTimeout(() => resolve(d + 1), 2000)),
d => d + 2,
d => d + 3
)
.pipe(d => d + 3)
$hub.on('@chain/test', d => console.log(d))
$hub.emit('@chain/test', 1) // 10
// 注册转换器
$hub.converter.DOMEventFormat1 = function (event) {
return [event.type, event.target]
}
$hub.converter.DOMEventFormat2 = function (event) {
return [e.target, e.type]
}
// 可以通过自由组合 链式 衔接的顺序,进行对流的控制,从而达到你想要的效果
const dispatcher = $hub.DOM('button')
.from('click')
.convert('DOMEventFormat1')
.emit('dom-click-event')
.from('mousedown')
.convert('DOMEventFormat1')
.emit('dom-mousedown-event')
// 或者
// $hub.DOM('button').from('click').convert('DOMEventFormat1' ).emit('dom-click-event1').emit('dom-click-event2' )
// $hub.DOM('button').from('click').convert('DOMEventFormat1' ).convert('DOMEventFormat2').emit('dom-click-event1' )
// 其他
// $hub.Fetch('https://xxx' ).emit('e1').convert('converter' ).emit('e2')
// $hub.WS('ws://xxx' ).emit('e1').convert('converter' ).emit('e2')
// $hub.IO('https://xxx').from('x1' ).convert('converter').emit('e1' ).from('x2').emit('e1' )
$hub.on('dom-click-event', event => console.log('button click', event))
$hub.on('dom-mousedown-event', event => console.log('button mousedown', event))
setTimeout(dispatcher.off, 10000)