Binding an object's method to a click handler in JavaScript

Javascript Web Development Object Oriented Programming

Following is the code for binding an object’s method to a click handler 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: 20px;
      font-weight: 500;
      color: blueviolet;
   }
</style>
</head>
<body>
<h1>Binding an object's method to a click handler in JavaScript</h1>
<div class="result"></div>
<br />
<button class="Btn">Click Here</button>
<h3>Click on the above button to know how many times you have clicked the button</h3>
<script>
   let resEle = document.querySelector(".result");
   let BtnEle = document.querySelector(".Btn");
   let testObj = {
      a: 0,
      timesClicked() {
         this.a += 1;
         resEle.innerHTML = "Times clicked = " + this.a;
      },
   };
   BtnEle.addEventListener("click", () => {
      testObj.timesClicked();
   });
</script>
</body>
</html>

Output

On clicking the ‘Click Here’ button −

AmitDiwan

Published on 18-Jul-2020 07:57:04

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