js - 事件订阅模式

var Events = function () {
    var obj = {}
    var that = this
    // 监听
    var listen = function (key, eventfn) {
        var stack, _ref
        stack = (_ref = obj[key]) != null ? _ref : obj[ key ] = []
        return stack.push(eventfn)
    }
    var one = function (key, eventfn) {
        remove(key)
        return listen(key, eventfn)
    }
    var remove = function (key) {
        var _ref
        return (_ref = obj[key]) != null ? _ref.length = 0 : void 0
    }
    // 发布事件的方法
    var trigger = function () {
        var fn, stack, _i, _len, _ref, key
        key = Array.prototype.shift.call(arguments)
        stack = (_ref = obj[ key ]) != null ? _ref : obj[ key ] = []
        // 遍历，通过参数找到要执行的方法
        for (_i = 0, _len = stack.length; _i < _len; _i++) {
            fn = stack[ _i ]
            if (fn.apply(that, arguments) === false) {
                return false
            }
        }
    }
    return {
        listen: listen,
        one: one,
        remove: remove,
        trigger: trigger
    }
}

export default Events
        

// 发布
const EventsCenter = Events()
EventsCenter .trigger(‘closeTab‘, {name: name})


// 订阅
EventsCenter.listen(‘closeTab‘, function (data) {
    console.log(data, ‘关闭菜单‘)
})