javaScript-course--zero-to-hero/15-addEventListener.html at main · codingwithsaleem/javaScript-course--zero-to-hero · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>add event listener in javaScript</title>
    <style>
        button {
            cursor: pointer;
        }
    </style>
</head>

<body>
    <div id="btn">
        <button>submit</button>
    </div>
    <script>
        let a = document.getElementById("btn");
        let x = function (event) {
            alert("hello 1")
            console.log(event);
            console.log(event.type);

        }
        let y = function (event) {
            alert("hello 2")
        }

        a.addEventListener("click", x);
        a.addEventListener("click",y);

        let input=prompt("enter your number");
        if(input==2){
            a.removeEventListener("click", x);
        }


    </script>
</body>

</html>