webkit-register.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>webkit-register</title>
    <style>
        button {
            margin: 5px;
        }
    </style>
    <script type="application/javascript">
        function SetMyParam() {
            test.myparam = document.getElementById("newvalue").value;
        }

        function GetMyParam() {
            msg("GetMyParam", test.myparam);
        }
    </script>
</head>
<body style="margin: 0px;padding: 0px;">
<p>
<h3 style="-webkit-app-region: drag;">webkit-register</h3>
</p>
<input id="newvalue" value="new value"/>
<button onclick="SetMyParam()">Set myparam value</button>
<button onclick="GetMyParam()">Get myparam value</button>
<p id="msgHtml"></p>
</body>
<script type="application/javascript">
    let msgHtml = document.getElementById("msgHtml");

    function msg(...vvv) {
        let str = msgHtml.innerHTML;
        for (let i = 0; i < vvv.length; i++) {
            str = str + "  " + vvv[i];
        }
        str += "<br>";
        msgHtml.innerHTML = str;
    }

    function clearMsg() {
        msgHtml.innerHTML = "";
    }
</script>
</html>