dataTable takes an array of key/value objects and return table of elements. e.g from parsed JSON. Requires jQuery. Widefat class is used for Wordpress admin pages, but its not a WP specific function.

wpadmin_data_table.js

jQuery(document).ready(function($) {
    
    function dataTable(data) {
		var response_table = $('<table class="widefat"></table>');
		var header = $('<thead><tr></tr></thead>');
		for(var k in data[0]) {
			header.append('<th>'+k+'</th>');
		}
		response_table.append(header);

		tbody = $('<tbody></tbody>');
		$.each(data, function() {
			var row = $('<tr></tr>');
			$.each(this, function(k, v) {
				row.append('<td>'+v+'</td>');
			});
			tbody.append(row);
		});
		response_table.append(tbody);
		return response_table;
	}
});