如何列出 javascript 对象的函数/方法？（这甚至可能吗？）
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How to list the functions/methods of a javascript object? (Is it even possible?)
提问by BenoitParis
This question is intentionally phrased like this question.
这个问题是故意措辞像 这个问题。
I don't even know if this is possible, I remember vaguely hearing something about some properties not enumerable in JS.
我什至不知道这是否可能，我记得依稀听到一些在 JS 中无法枚举的属性。
Anyway, to cut a long story short: I'm developing something on a js framework for which I have no documentation and no easy access to the code, and it would greatly help to know what I can do with my objects.
无论如何，长话短说：我正在一个 js 框架上开发一些东西，我没有文档，也无法轻松访问代码，这将极大地帮助我了解我可以用我的对象做什么。
回答by Allan Tokuda
If you include Underscore.jsin your project, you can use _.functions(yourObject).
如果在项目中包含Underscore.js，则可以使用_.functions(yourObject).
回答by Mike Glenn
I think this is what you are looking for:
我认为这就是你要找的：
var obj = { locaMethod: function() { alert("hello"); }, a: "b", c: 2 };
for(var p in obj)
{
if(typeof obj[p] === "function") {
// its a function if you get here
}
}
回答by andrewmu
You should be able to enumerate methods that are set directly on an object, e.g.:
您应该能够枚举直接在对象上设置的方法，例如：
var obj = { locaMethod: function() { alert("hello"); } };
But most methods will belong to the object's prototype, like so:
但是大多数方法都属于对象的原型，如下所示：
var Obj = function ObjClass() {};
Obj.prototype.inheritedMethod = function() { alert("hello"); };
var obj = new Obj();
So in that case you could discover the inherited methods by enumerating the properties of Obj.prototype.
因此，在这种情况下，您可以通过枚举 Obj.prototype 的属性来发现继承的方法。
回答by Giuseppe Romagnuolo
You can use the following:
您可以使用以下内容：
var obj = { locaMethod: function() { alert("hello"); }, a: "b", c: 2 };
for(var p in obj)
{
console.log(p + ": " + obj[p]); //if you have installed Firebug.
}
