How to override derived properties in JavaScript?

JavascriptWeb DevelopmentObject Oriented Programming

Following is the code to override derived properties in JavaScript −

Example

 Live Demo

<!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,
   .sample {
      font-size: 18px;
      font-weight: 500;
      color: rebeccapurple;
   }
   .result {
      color: red;
   }
</style>
</head>
<body>
<h1>Override derived properties</h1>
<div class="sample">Before overriding <br /></div>
<br />
<div class="result">After overriding <br /></div>
<br />
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to override the above properties</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let resEle = document.querySelector(".result");
   let BtnEle = document.querySelector(".Btn");
   let objPerson = {name: "Rahul",age: 12,class: 7,};
   let Person1 = Object.create(objPerson);
   sampleEle.innerHTML += "Person1.name = " + Person1.name + "<br>";
   sampleEle.innerHTML += "Person1.age = " + Person1.age + "<br>";
   sampleEle.innerHTML += "Person1.class = " + Person1.class + "<br>";
   BtnEle.addEventListener("click", () => {
      Person1.name = "Shawn";
      Person1.age = 18;
      Person1.class = 12;
      resEle.innerHTML += "Person1.name = " + Person1.name + "<br>";
      resEle.innerHTML += "Person1.age = " + Person1.age + "<br>";
      resEle.innerHTML += "Person1.class = " + Person1.class + "<br>";
   });
</script>
</body>
</html>

Output

On clicking the ‘CLICK HERE’ button −

raja
Published on 16-Jul-2020 12:45:48
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