function judgeType(ele){
let res = typeof ele;
if(res === "object"){
// 短路表达式，第一个成立则返回第二个的值，第一个不成立，则返回第一个的值
Object.prototype.toString.call(ele) === "[object Object]" && (res = "object");
Object.prototype.toString.call(ele) === "[object Array]" && (res = "array");
Object.prototype.toString.call(ele) === "[object Date]" && (res = "date");
Object.prototype.toString.call(ele) === "[object Null]" && (res = "null");
Object.prototype.toString.call(ele) === "[object RegExp]" && (res = "RegExp");
}
return res;
}
// ----------一般数据类型---------
console.log(judgeType(23)); // number
console.log(judgeType(false)); // boolean
console.log(judgeType("23")); // string
console.log(judgeType(undefined)); // undefined
console.log(judgeType(NaN)); // number
console.log(judgeType(function (){})); // function
console.log("===============================");
// ---------- 对象类型数据---------
console.log(judgeType(null)); // object null
console.log(judgeType({})); // object object
console.log(judgeType([])); // object array
console.log(judgeType(new Date())); // object date
console.log(judgeType(new RegExp())); // object RegExp
