以下为Demo：
代码语言：javascript复制class Notice {
private eventList = {};
private constructor(appSNC) {
this.init(appSNC);
}
/* 已通过singleton方法实现单列
static _ins: any = null;
static getInstance() {
if (!this._ins) {
return this._ins = new Notice();
}
return this._ins;
}
*/
public init(appSNC) {
const initFaceSuccess = (res) => {
// @ts-ignore
this.trigger('ready', res);
}
}
public listen(key, fn) {
if (!this.eventList[key]) {
this.eventList[key] = [];
}
this.eventList[key].push(fn);
}
private trigger() {
const key = Array.prototype.shift.call(arguments);
const fns = this.eventList[key];
if(!fns || fns.length === 0) {
return false;
}
for(let i = 0, fn; fn = fns[i ];) {
fn.apply(this, arguments);
}
}
public remove(key: string, fn: any) {
const fns = this.eventList[key];
if(!fns) {
return;
}
if(!fn) {
fns && (fns.length = 0);
}
for(let l = fns.length; l >= 0; l--) {
let _fn = fns[l];
if(_fn === fn) {
fns.splice(l,1);
}
}
}
}
export default singleton(Notice);
const notice = new Notice(appSNC);
notice.listen('ready', (res) => {
})
