1、方法

<!--
 * @Descripttion: 類型判斷
 * @version: 0.0.1
 * @Author: PengShuai
 * @Date: 2022年04月29日11:21:14
 * @LastEditors: PengShuai
 * @LastEditTime: 2022年04月29日11:21:14
-->
const typeOf = data => {
  let type = Object.prototype.toString.call(data);
  if (type === "[object String]") {
    type = "String";
  } else if (type === "[object Number]") {
    type = "Number";
  } else if (type === "[object Null]") {
    type = "Null";
  } else if (type === "[object Boolean]") {
    type = "Boolean";
  } else if (type === "[object Array]") {
    type = "Array";
  } else if (type === "[object Object]") {
    type = "Object";
  } else {
    type = "未進行判斷的類型:" + type;
  }
  return type;
};

2、例