获取对象的所有已定义函数

const obj = {
  function1() {
    // ...
  },
  function2() {
    // ...
  },
};

const functions = Object.getOwnPropertyNames(obj).filter((prop) => typeof obj[prop] === 'function');
console.log(functions); // 输出: ['function1', 'function2']

class MyClass:
    def function1(self):
        pass

    def function2(self):
        pass

obj = MyClass()
functions = [func for func in dir(obj) if callable(getattr(obj, func))]
print(functions)  # 输出: ['function1', 'function2']

import java.lang.reflect.Method;

public class MyClass {
    public void function1() {
    }

    public void function2() {
    }

    public static void main(String[] args) {
        MyClass obj = new MyClass();
        Method[] methods = obj.getClass().getDeclaredMethods();
        for (Method method : methods) {
            System.out.println(method.getName());
        }
    }
}