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How to show Hide Elements By click on checkbox in Jquery

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>How to show Hide Elements By click on checkbox in Jquery </title>
    <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
    <style type="text/css">
        .box {
            color: black;
            display: none;
            margin-top: 20px;
        }

        .check {
            background: #ffffff;
        }
    </style>
</head>
<body>
    <div>
        <label><input type="checkbox" name="colorCheckbox" value="check"> Click on the check box</label>
    </div>
    <div class="check box">
        <form method="post" action="" id="myfrm">
            <fieldset>
                <legend>Personal information:</legend>
                First name:<br>
                <input type="text" name="firstname">
                <br> Last name:<br>
                <input type="text" name="lastname">
                <br><br>
                <input type="submit" value="Submit">
            </fieldset>
        </form>
    </div>
    <script type="text/javascript">
        $(document).ready(function() {
            $('input[type="checkbox"]').click(function() {
                var inputValue = $(this).attr("value");
                $("." + inputValue).toggle();
            });
        });
    </script>
</body>
</html>

Run it yourself

Demo

Personal information: First name:

Last name: