JSFiddle - React, Tailwind, and code Playground

HTML

<body onLoad="buildHtmlTable()">
<table id="excelDataTable" border="1">
 </table>
</body>

CSS

th {
    font-weight : bold
}

JavaScript

var myList=[{"name": "abc","age": 50},{"name": {"1": "piet","2": "jan","3": "klaas"},"age": "25","hobby": "watching tv"},{"name": "xyz","hobby": "programming","subtable": [{"a": "a","b": "b"},{"a": "a","b": "b"}]}];

// Builds the HTML Table out of myList json data from Ivy restful service.
 function buildHtmlTable() {
      addTable(myList, $("#excelDataTable"));
 }
 
function addTable(list, appendObj) {
    var columns = addAllColumnHeaders(list, appendObj);

    for (var i = 0; i < list.length; i++) {
        var row$ = $('<tr/>');
        for (var colIndex = 0; colIndex < columns.length; colIndex++) {
            var cellValue = list[i][columns[colIndex]];

            if (cellValue == null) {
                cellValue = "";
            }

            if (cellValue.constructor === Array)
            {
                $a = $('<td/>');
                row$.append($a);
                addTable(cellValue, $a);

            } else if (cellValue.constructor === Object)
            {

                var array = $.map(cellValue, function (value, index) {
                    return [value];
                });

                $a = $('<td/>');
                row$.append($a);
                addObject(array, $a);

            } else {
                row$.append($('<td/>').html(cellValue));
            }
        }
        appendObj.append(row$);
    }
}


function addObject(list, appendObj) {
    for (var i = 0; i < list.length; i++) {
        var row$ = $('<tr/>');

        var cellValue = list[i];

        if (cellValue == null) {
            cellValue = "";
        }

        if (cellValue.constructor === Array)
        {
            $a = $('<td/>');
            row$.append($a);
            addTable(cellValue, $a);

        } else if (cellValue.constructor === Object)
        {

            var array = $.map(cellValue, function (value, index) {
                return [value];
            });

            $a = $('<td/>');
            row$.append($a);
           ...