如何创建一个不可修改的属性

• 创建一个不可修改的属性

var MyClass = cc.Node.extend({
    ctor : function(){
     
        this._super()
        this.actorId = 10;
        cc.log(this.actorId);
    }
});

cc.defineGetterSetter(MyClass.prototype, "actorId", function () {
     
    return this._actorId;
}, function () {
     
     this._actorId = 5;  //不可写入
});

• 作为对比创建一个可修改属性

var MyClass = cc.Node.extend({
    ctor : function(){
     
        this._super()
        this.actorId = 10;
        cc.log(this.actorId);
    }
});

cc.defineGetterSetter(MyClass.prototype, "actorId", function () {
     

    return this._actorId;
}, function (val) {
     
     this._actorId = val;  //可写入
});