Array.prototype.isPrototypeOf(obj)
Object.prototype.toString.call(obj)
Array.isArray(obj)
实例:
//typeof() 【原始类型:可分辨;引用类型:object】
console.log(typeof([])); //object
console.log(typeof({})); //object
//Array.prototype.isPrototypeof(obj)
console.log(Array.prototype.isPrototypeOf([])); //true
console.log(Array.prototype.isPrototypeOf({})); //false //Object.prototype.toString.call(obj)
console.log(Object.prototype.toString.call([])); //[object Array]
console.log(Object.prototype.toString.call({})); //[object Object] //ES5: Array.isArray(obj) 【兼容性】
console.log(Array.isArray([])); //true
console.log(Array.isArray({})); //false