JS梳理之 原型原型链

instanceof

function Person(name) {this.name = name;
}const alice = new Person("Alice");console.log(alice instanceof Person); // 输出: true
console.log(alice instanceof Object);  // 输出: true
console.log(alice instanceof Array);   // 输出: falseconst arr = [1, 2, 3];
console.log(arr instanceof Array);     // 输出: true
console.log(arr instanceof Object);     // 输出: true