tc-event

🚀 功能强大、简单易用的事件库

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1. 特性

typescript 编写
多端支持
自定义事件顺序、多种触发模式
全局拦截机制
体积小巧，简单易用
支持创建模块，避免事件冲突

2. 快速使用

2.1 npm 安装

npm i tc-event

import event from 'tc-event';

event.regist('myEvent', (data) => {
    console.log('emited!', data);
})

event.emit('myEvent', 'Aha!');

2.2 cdn

<script src="https://cdn.jsdelivr.net/npm/tc-event/tc-event.min.js"></script>
<script>
    TEvent.regist('myEvent', function (data) {
        console.log('emited!', data);
    })

    TEvent.emit('myEvent', 'Aha!');
</script>

3 api

详情请参考 index.d.ts

export interface IEventEmitter {
    removed: boolean;
    interceptor: IEventInterceptor;
    name: string;
    getEventNames(): string[]; // 事件枚举
    getEvent(): IEventJson<CEvent>;
    getEvent(name: TEventName): CEvent;
    emit(name: TEventName, data?: any): boolean; // 触发事件
    onEmit(fn: IOnInterceptorEmit): void;
    regist: IRegistMethod;
    registObject(options: IEventRegistOption & {eventName: TEventName}): IListenerItem;
    onRegist(fn: IOnInterceptorRegist): void;
    checkEvent(name: TEventName): boolean; // 检查是否存在事件
    remove: IRemoveMethod;
    clear(name?: TEventName | TEventName[]): void;
    order(name: TEventName): number;
    registNotImmediate(name: TEventName, listener: IEventListener): IListenerItem;
    registNotImmediateOnce(name: TEventName, listener: IEventListener): IListenerItem;
    registOnce(name: TEventName, listener: IEventListener): IListenerItem;
    registSingle(name: TEventName, listener: IEventListener): IListenerItem;
}

export interface IEventStatic extends IEventEmitter {
    version: string;
    createModule (name: TModuleName): IEventEmitter;
    getModule (): IEventJson<IEventEmitter>;
    getModule (name: TModuleName): IEventEmitter;
    removeModule(name: TModuleName): void;
    clearModule(): void;
    EventEmitter: typeof EventEmitter;
}

4 使用实例

4.1 checkEvent

判断事件是否存在

const eventName = 'test-checkEvent';
const result = [];
result.push(event.checkEvent(eventName));
event.regist(eventName, () => {});
result.push(event.checkEvent(eventName));
event.emit(eventName);
result.push(event.checkEvent(eventName));
event.clear(eventName);
result.push(event.checkEvent(eventName));
event.regist(eventName, () => {});
result.push(event.checkEvent(eventName));
event.clear();
result.push(event.checkEvent(eventName));
console.log(result);
// [false, true, true, false, true, false]

4.2 clear 方法

清除单个或所有事件

const eventName = 'test-clear';
const result = [];
event.regist(eventName, () => {
    result.push(1);
});
event.emit(eventName);
event.clear(eventName);
event.emit(eventName);
event.regist(eventName, {
    immediate: false,
    listener: () => {
        result.push(2);
    }
});
event.emit(eventName);
event.clear();
event.emit(eventName);
console.log(result);
// [1, 2]

4.3 immediate 参数

immediate 参数表示注册事件时，如果该事件已经被触发过，是否需要立即触发当前的事件

默认值为 true

const eventName = 'test-immediate';
const result = [];
event.emit(eventName);

event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, {
    immediate: true,
    listener () { result.push(2);}
});
event.regist(eventName, {
    immediate: false,
    listener () {result.push(3);}
});
console.log(result);
// [1, 2]

4.4 index 参数

index 参数表示注册事件时，希望插入的位置

const eventName = 'test-order';
    
const result = [];
event.regist(eventName, () => {
    result.push(1); // 1
});
event.regist(eventName, () => {
    result.push(2); // 1 2
});
event.regist(eventName, () => {
    result.push(3); // 1 2 3
});
event.regist(eventName, () => {
    result.push(4); // 1 2 3 4
});
event.regist(eventName, {
    index: 0,  // 5 1 2 3 4
    listener () {result.push(5);}
});
event.regist(eventName, {
    index: 2, // 5 1 6 2 3 4
    listener () {result.push(6);}
});
event.regist(eventName, {
    index: 1, // 5 7 1 6 2 3 4
    listener () {result.push(7);}
});
event.regist(eventName, {
    index: 100, // 5 7 1 6 2 3 4 8
    listener () {result.push(8);}
});
event.regist(eventName, {
    index: -3, // 9 5 7 1 6 2 3 4 8
    listener () {result.push(9);}
});
event.emit(eventName);
console.log(result);
// [9, 5, 7, 1, 6, 2, 3, 4, 8]

4.5 interceptor

全局拦截器，支持 onRegist 和 onEmit

const eventName1 = 'test-interceptor1';
const eventName2 = 'test-interceptor2';
const result = [];
event.onRegist(({name, item}) => {
    result.push(`onRegist: ${name}`);
});
event.onEmit(({name, item, data, firstEmit}) => {
    result.push(`onEmit: ${name} ${data} ${firstEmit}`);
});
event.regist(eventName1, () => {});
event.regist(eventName2, () => {});
event.emit(eventName1, `${eventName1} data`);
event.emit(eventName2, `${eventName2} data`);
event.emit(eventName2, `${eventName2} data2`);
console.log(result);
/*
    [
        'onRegist: test-interceptor1',
        'onRegist: test-interceptor2',
        'onEmit: test-interceptor1 test-interceptor1 data true',
        'onEmit: test-interceptor2 test-interceptor2 data true',
        'onEmit: test-interceptor2 test-interceptor2 data2 false'
    ]
*/

4.6 once 参数

once 参数是否只触发依次

const eventName = 'test-once';
const result = [];

event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, {
    once: true,
    listener () { result.push(2);}
});
event.regist(eventName, {
    once: false,
    listener () {result.push(3);}
});
event.emit(eventName);
event.emit(eventName);
console.log(result);
// [1, 2, 3, 1, 3]

4.7 times 参数

times 参数监听触发的次数

const eventName = 'test-times';
const result = [];

event.regist(eventName, {
    times: 1,
    listener () { result.push(1);}
});
event.regist(eventName, {
    times: 2,
    listener () { result.push(2);}
});
event.regist(eventName, {
    times: 3,
    listener () { result.push(3);}
});
event.emit(eventName);
event.emit(eventName);
event.emit(eventName);
event.emit(eventName);
// [1, 2, 3, 2, 3, 3]

4.8 order 参数

控制插入事件的序号（和 index参数有区别）

const eventName = 'test-order';
            
const result = [];
event.regist(eventName, () => {
    result.push(1); // 1
});
event.regist(eventName, () => {
    result.push(2); // 1 2
});
event.regist(eventName, {
    order: 0, // 0 1 2
    listener () {result.push(3);}
});
event.regist(eventName, {
    order: 1, // 0 1 *1 2
    listener () {result.push(4);}
});
event.regist(eventName, {
    order: 1, // 0 1 *1 **1 2
    listener () {result.push(5);}
});
event.regist(eventName, {
    order: 1, // 0 ***1 1 *1 **1 2
    orderBefore: true,
    listener () {result.push(6);}
});
event.regist(eventName, {
    order: 10, // 0 ***1 1 *1 **1 2 10
    listener () {result.push(7);}
});
event.regist(eventName, () => { // 0 ***1 1 *1 **1 2 3 10
    result.push(8);
});
event.emit(eventName);
console.log(result);

4.9 single 参数

单例监听模式，对某个事件名启用 single 参数会覆盖之前该事件的所有监听函数

且之后该事件无需再带上 single 参数

启用single参数时， index order orderBefore 参数无效

const eventName = 'test-single';
const result = [];

event.regist(eventName, () => {
    result.push(1);
});
event.emit(eventName);
// 测试覆盖旧方法
event.regist(eventName, {
    single: true,
    immediate: false,
    listener: () => {
        result.push(2);
    }
});
event.emit(eventName);
event.clear(eventName);

event.regist(eventName, {
    single: true,
    listener () { result.push(3);}
});
event.regist(eventName, {
    single: true,
    listener () { result.push(4);}
});
event.emit(eventName);
// 测试single参数缓存
event.regist(eventName, {
    immediate: false,
    listener () { result.push(5);}
});
event.emit(eventName);
console.log(result);
// [1, 2, 4, 5]

4.10 name 参数

name 参数用来给一个监听增加一个参数

默认值为 eventName + id

const eventName = 'test-name';
    
const item1 = event.regist(eventName, () => {
});
const item2 = event.regist(eventName, {
    name: 'listener-name',
    listener () {}
});
// item1.name === 'test-name-1'
// item2.name === 'listener-name'

4.11 head 参数

head参数用于将监听添加到事件头部

const eventName = 'test-head';
const result = [];
event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, {
    order: -1,
    listener () {result.push(2);}
});
event.regist(eventName, {
    index: -1,
    listener () {result.push(3);}
});
event.regist(eventName, {
    head: true,
    listener () {result.push(4);}
});
event.regist(eventName, {
    head: true,
    listener () {result.push(5);}
});
event.emit(eventName);
// result: [5, 4, 3, 2, 1]

4.12 tail 参数

tail参数用于将监听添加到事件尾部

const eventName = 'test-tail';
const result = [];
event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, {
    order: 100,
    listener () {result.push(2);}
});
event.regist(eventName, {
    index: 100,
    listener () {result.push(3);}
});
event.regist(eventName, {
    listener () {result.push(4);}
});
event.regist(eventName, {
    tail: true,
    listener () {result.push(5);}
});
event.regist(eventName, {
    tail: true,
    listener () {result.push(6);}
});
event.emit(eventName);
// result: [1, 4, 2, 3, 5, 6]

4.13 order 函数

获取某个监听的序号

const eventName = 'test-order-fn';
const result = [];

event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, () => {
    result.push(2);
});
const e1 = event.regist(eventName, () => {
    result.push(3);
});
const e2 = event.regist(eventName, {
    order: 1,
    listener () { result.push(4);}
});
event.regist(eventName, () => {
    result.push(5);
});
event.emit(eventName);
console.log([result, event.order(eventName), e1.order, e2.order]);
// [[1, 4, 2, 3, 5], 4, 3, 1

4.14 remove 函数

移除事件监听

const eventName = 'test-remove';
const result = [];
const l4 = () => { result.push(4); };
const l5 = () => { result.push(5); };
const l6 = () => { result.push(6); };
const l7 = () => { result.push(7); };
event.regist(eventName, () => {
    result.push(1);
});
event.regist(eventName, () => {
    result.push(2);
});
event.regist(eventName, () => {
    result.push(3);
    event.remove(eventName, l4, true);
    event.remove(eventName, l5);
    event.regist(eventName, l7);
});
event.regist(eventName, l4);
event.regist(eventName, l5);
event.regist(eventName, l6);
event.remove(eventName, l6);
event.emit(eventName);
event.emit(eventName);
console.log(result);
// [1, 2, 3, 7, 5, 1, 2, 3, 7, 7]

4.15 registNotImmediate

event.registNotImmediate('xxx', ()=>{})
// 等价于
event.regist('xxx', {
    immediate: false,
    listener: ()=>{}
})

4.16 registOnce

event.registOnce('xxx', ()=>{})
// 等价于
event.regist('xxx', {
    once: true,
    listener: ()=>{}
})

4.17 registNotImmediateOnce

event.registNotImmediateOnce('xxx', ()=>{})
// 等价于
event.regist('xxx', {
    immediate: false,
    once: true,
    listener: ()=>{}
})

4.18 registSingle

event.registSingle('xxx', ()=>{})
// 等价于
event.regist('xxx', {
    single: true,
    listener: ()=>{}
})

4.19 监听回调参数

监听函数第二个参数是一个json，包含有三个属性

firstEmit 表示该监听是否是首次触发
remove 是移除当前监听的方法
clear 是移除当前事件的方法
item 是当前的监听对象

event.regist('xxx', (data, {firstEmit, item, remove, clear})=>{

})

4.20 链式调用

regist函数当指传入事件名时会启用链式调用

所有参数都可通过链式调用，所有api都是可选的，最后需要通过 listen 方法触发监听

event.regist('xxx')
    .index(1)
    .order(1)
    .orderBefore()
    .notImmediate()
    .single()
    .once()
    .times(1)
    .listener()
    .name('xxx')
    .head()
    .tail()
    .listen();

声明文件如下

interface IEventLink {
    single: (single: boolean) => IEventLink;
    notImmediate: (immediate: boolean) => IEventLink;
    once: (once: boolean) => IEventLink;
    index: (index: number) => IEventLink;
    order: (order: number) => IEventLink;
    orderBefore: (orderBefore: boolean) => IEventLink;
    listener: (listener: IEventListener) => IEventLink;
    name: (name: string) => IEventLink;
    head: () => IEventLink;
    tail: ()=> IEventLink;
    times: (times: number)=> IEventLink;
    listen: (listener?: IEventListener) => IListenerItem;
}

4.21 事件模块

createModule

const result = [];
const name = 'module_event';
const moduleA = event.createModule('A');
const moduleB = event.createModule('B');

moduleA.regist(name, data => {result.push('A' + data);});
moduleB.regist(name, data => {result.push('B' + data);});

moduleA.emit(name, 1);
moduleA.emit(name, 2);
console.log(result);

getModule

event.createModule('A');
event.createModule('B');

console.log([
    event.getModule('A').moduleName,
    event.getModule('B').moduleName,
]);

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README.cn.md

README.cn.md

tc-event

🚀 功能强大、简单易用的事件库

1. 特性

2. 快速使用

2.1 npm 安装

2.2 cdn

3 api

4 使用实例

4.1 checkEvent

4.2 clear 方法

4.3 immediate 参数

4.4 index 参数

4.5 interceptor

4.6 once 参数

4.7 times 参数

4.8 order 参数

4.9 single 参数

4.10 name 参数

4.11 head 参数

4.12 tail 参数

4.13 order 函数

4.14 remove 函数

4.15 registNotImmediate

4.16 registOnce

4.17 registNotImmediateOnce

4.18 registSingle

4.19 监听回调参数

4.20 链式调用

4.21 事件模块

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tc-event

🚀 功能强大、简单易用的事件库

1. 特性

2. 快速使用

2.1 npm 安装

2.2 cdn

3 api

4 使用实例

4.1 checkEvent

4.2 clear 方法

4.3 immediate 参数

4.4 index 参数

4.5 interceptor

4.6 once 参数

4.7 times 参数

4.8 order 参数

4.9 single 参数

4.10 name 参数

4.11 head 参数

4.12 tail 参数

4.13 order 函数

4.14 remove 函数

4.15 registNotImmediate

4.16 registOnce

4.17 registNotImmediateOnce

4.18 registSingle

4.19 监听回调参数

4.20 链式调用

4.21 事件模块