向JS對象添加和刪除事件

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this.removeEventListener = function (obj, ename, func) {    var store = obj[this.addEventListener.pre + ename];    if (!store) {        return;    }    var i = store.indexOf(func);    if (i < 0) {        return;    }    obj[this.addEventListener.pre + ename].splice(i, 1);};this.addEventListener = function (obj, enames) {    if (arguments.length < 2) {        return;    }    if (!this.addEventListener.pre) {        this.addEventListener.pre = "god_" + Math.random() * Number.MAX_VALUE;    }    if (typeof arguments[1] == "string") {        var ename = arguments[1];        var fullname = "on" + ename;        if (!(fullname in obj)) {            var store = this.addEventListener.pre + ename;            if (!obj[store]) {                obj[store] = [];            }            Object.defineProperty(obj, fullname, {                set: function (v) {                    obj[store].push(v);                }            });            var notice = ename === "notice" ? "notice" : "notice" + ename;            obj[notice] = function () {                for (var i = 0; i < obj[store].length; i++) {                    try {                        obj[store][i].apply(obj, arguments);                    } catch (e) {                        console.log(e.message);                    }                }            };        }    }    if (typeof arguments[2] === "string") {        var narguments = [obj];        for (var i = 2; i < arguments.length; i++) {            narguments.push(arguments[i]);        }        this.addEventListener.apply(this, narguments);    }};

 

向JS對象添加和刪除事件