JavaScript is an object-based language based on prototypes. Inheritance is implemented in JavaScript using the prototype object.
Following is the code to implement Inheritance in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 18;
color: blueviolet;
font-weight: 500;
}
</style>
</head>
<body>
<h1>JavaScript Inheritance</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to call the welcome method inherited by person1 and person2 object
</h3>
<script>
let BtnEle = document.querySelector(".Btn");
let resEle = document.querySelector(".result");
function Person(name, age, city) {
this.name = name;
this.age = age;
this.city = city;
}
Person.prototype.welcome = function () {
resEle.innerHTML +=
" Welcome "+this.name+" age: "+this.age +" city: "+this.city+"<br>";
};
BtnEle.addEventListener("click", () => {
let person1 = new Person("Rohan", 22, "Delhi");
person1.welcome();
let person2 = new Person("Shawn", 19, "England");
person2.welcome();
});
</script>
</body>
</html>Output
On clicking the ‘CLICK HERE’ button −
