1. console.log(Student.prototype.__proto__)
  2. console.log(Prople.prototype)
  3. console.log(Student.prototype.__proto__ === Prople.prototype)

Snipaste_2020-07-19_21-47-54.png

  1. xialuo.hasOwnProperty('name')  //true
  2. xialuo.hasOwnProperty('sayHi')  //false

hasOwnProperty

6.png