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' }
});

10-05 20:47
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