我可以在这样的JavaScript对象中使用getter:
var member = {
firstName:"XYZ",
lastName:"zzz",
get fullName(){ return (this.firstName + ' ' + this.lastName); }
}
我什至可以即时添加更多属性,如下所示:member.isGuest = true;
但是,有什么方法可以将 setter/getter 添加到现有对象中?像这样:member.isGuest = get isGuest(){ return this.firstName=='Guest'; }
最佳答案
尝试defineProperty
Object.defineProperty(member, 'isGuest', {
get: function() { return this.firstName=='Guest' }
});