page1.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Page 1</title>
</head>
<body>
    <div class="campaignstrategy">
        <h1>1. Campaign Strategy</h1>
        <input type="checkbox" name="awareness" id="awareness_checkbox" value="0.01">Awareness<br>
        <input type="checkbox" name="directresponse" id="directresponse_checkbox" value="0.01">Direct Response<br>
        <button id="next_page_button">Next Page</button>
    </div>
    <script
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        integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
        crossorigin="anonymous">
    </script>
    <script>
        $('#next_page_button').click(function(){
        let table_info = [];
        $('.campaignstrategy input[type=checkbox]').each(
            function(index, value){
            if($(this).is(':checked')){
                table_info.push(
                    {
                        name: $(this).attr('name'),
                        value: $(this).attr('value'),
                    }
                );
            }
        });
        let base64str=btoa(JSON.stringify(table_info));

        window.location = "page2.html?table_data=" + base64str;
        });
    </script>
</body>
</html>