Question

说我有一些对象：

Org.prototype = {
 constructor  : Org,
 get id(){ return this._id; },
 some_method: function(){},
 etc...

如何检索对象的getter？

Answer 1

循环遍历所有属性名称，并向下过滤到属性描述符具有get属性的那些名称。

＆＃13;

function Foo() { }

Foo.prototype = { 
  get id() { return this._id; },
  otherfunc() { }
};

function getGetters(obj) {
  var proto = obj.prototype;

  return Object.getOwnPropertyNames(proto)
    .filter(name => Object.getOwnPropertyDescriptor(proto, name).get);
}
    
console.log(getGetters(Foo));

＆＃13;

Answer 2

要获取具有“getter”功能的属性列表，请使用以下带有Object.keys，Object.getOwnPropertyDescriptor和Array.filter函数的approch：

function Org(){};

Org.prototype = {
    constructor  : Org,
    get id(){ return this._id; },
    some_method: function(){}
};

propList = Object.keys(Org.prototype).filter(function (p) {
    return typeof Object.getOwnPropertyDescriptor(Org.prototype, p)['get'] === "function"
});

console.log(propList);

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor

如何获得＆＃39;获取＆＃39;属性？

2 个答案: