如何获取用户传入数据的对象类型

function getType(obj) {
  return Object.prototype.toString.call(obj).slice(8, -1);
}

console.log(getType([])); // Array
console.log(getType({})); // Object
console.log(getType('hello')); // String
console.log(getType(123)); // Number

def get_type(obj):
    return type(obj).__name__

print(get_type([]))  # list
print(get_type({}))  # dict
print(get_type('hello'))  # str
print(get_type(123))  # int

public class TypeChecker {
    public static String getType(Object obj) {
        return obj.getClass().getSimpleName();
    }

    public static void main(String[] args) {
        System.out.println(getType(new int[]{})); // int[]
        System.out.println(getType(new HashMap<>())); // HashMap
        System.out.println(getType("hello")); // String
        System.out.println(getType(123)); // Integer
    }
}

using System;

public class TypeChecker {
    public static string GetType(object obj) {
        return obj.GetType().Name;
    }

    public static void Main() {
        Console.WriteLine(GetType(new int[]{})); // Int32[]
        Console.WriteLine(GetType(new Dictionary<string, int>())); // Dictionary`2
        Console.WriteLine(GetType("hello")); // String
        Console.WriteLine(GetType(123)); // Int32
    }
}