Examples of inheritance and usage in JavaScript _ javascript skills

This article mainly introduces the inheritance usage in JavaScript and analyzes the inheritance-related techniques in the form of examples in detail, if you need it, you can refer to the examples in this article to analyze the inheritance usage in JavaScript. Share it with you for your reference. The details are as follows:

// define the Person Classfunction Person() {}Person.prototype.walk = function(){ alert ('I am walking!');};Person.prototype.sayHello = function(){ alert ('hello');};// define the Student classfunction Student() { // Call the parent constructor Person.call(this);}// inherit PersonStudent.prototype = new Person();// correct the constructor pointer because it points to PersonStudent.prototype.constructor = Student;// replace the sayHello methodStudent.prototype.sayHello = function(){ alert('hi, I am a student');}// add sayGoodBye methodStudent.prototype.sayGoodBye = function(){ alert('goodBye');}var student = new Student();student.sayHello();student.walk();student.sayGoodBye();// check inheritancealert(student instanceof Person); // true alert(student instanceof Student); // true

I hope this article will help you design javascript programs.