JS订阅模式

EVENT

var EVENT = (function(){

    var bind = function(b){
        var queue = this.__MSG_QS__;
        if(!queue[b]){
            queue[b] = [];
        }
        for(var a = 1, len = arguments.length, Y; a < len; a++) {
            queue[b].push(arguments[a])
        }
    };

    var trigger = function(Y){
        var queue = this.__MSG_QS__[Y.type];
        if(queue == null){
            return;
        }
        for(var a = 0, len = queue.length; a < len; a++) {
            queue[a].handler(Y)
        }
    };

    return {
        init: function(X){
            X.__MSG_QS__ = {};
            X.bind = bind;
            X.trigger = trigger;
            return X;
        }
    };
})();