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removeEventListener.html
Views: 584 | Author: shubh 
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// remove eventlistener
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>event listener</title>
    <style>
        body {
            background-color: aquamarine;
        }
        button{
            background-color:aquamarine;
            border: 2px solid black;
            border-radius: 5px;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <h1 id="heading"> hi javascript </h1>
    <button id="btn">Click</button>
 <script>
    //Note: to remove an eventlistener the callback reference should be same to remove. 
    let btn = document.getElementById("btn");
    btn.addEventListener("click", () =>{
        console.log("button click1");

    });
    btn.addEventListener("click", () =>{
        console.log("button click2");
        
    });
    const handler=() =>{
        console.log("button click3");
        
    };
    btn.addEventListener("click",handler);
    btn.addEventListener("click", () =>{
        console.log("button click4");
        
    });
    btn.removeEventListener("click",handler);
</script>   
</body>
</html>

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