JavaScript-Programs/lowercase-uppercase.html at master · softwaredeveloperhub01/JavaScript-Programs · GitHub

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <button onclick="toUpperCase()">Click Here for Convert String to Uppercase</button>
    <p id="toUpperCase"></p>

    <button onclick="toLowerCase()">Click Here for Convert String to lowercase</button>
    <p id="toLowerCase"></p>

    <script>

        function toUpperCase() {
            var str = "Hello Coder!";
            var res = str.toUpperCase();
            document.getElementById("toUpperCase").innerHTML = res;
        }

        function toLowerCase() {
            var str = "Hello Coder!";
            var res = str.toLowerCase();
            document.getElementById("toLowerCase").innerHTML = res;
        }
    </script>
</body>

</html>