How to: React Table with fixed Header

In this tutorial, I want to show you how to use React Table Library with a fixed header. In the previous example, you installed React Table Library to create a table component and gave it a theme. Now, we will enable users to have their header sticky to the top:

...
import { useTheme } from '@table-library/react-table-library/theme';

const App = () => {
  const data = { nodes: list };

  const theme = useTheme({
    Table: `
      height: 100%;
    `,
  });

  return (
    <div
      style={{
        height: '150px',
      }}
    >
      <Table data={data} theme={theme}>
        ...
      </Table>
    </div>
  );
};

The data object we passed to the Table component in the previous tutorial only had three items, so we need to use a different data object this time with more items in order to see the sticky header work properly. The following data object has ten items and works properly.

const list = [
  {
    id: "1",
    name: "VSCode",
    deadline: new Date(2020, 1, 17),
    type: "SETUP",
    isComplete: true,
  },
  {
    id: "2",
    name: "JavaScript",
    deadline: new Date(2020, 2, 28),
    type: "LEARN",
    isComplete: true,
  },
  {
    id: "3",
    name: "React",
    deadline: new Date(2020, 3, 8),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "4",
    name: "JSX",
    deadline: new Date(2020, 4, 10),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "5",
    name: "Hooks",
    deadline: new Date(2020, 5, 12),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "6",
    name: "Components",
    deadline: new Date(2020, 6, 14),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "7",
    name: "HTML",
    deadline: new Date(2020, 7, 17),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "8",
    name: "CSS",
    deadline: new Date(2020, 8, 28),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "9",
    name: "Classes",
    deadline: new Date(2020, 9, 18),
    type: "LEARN",
    isComplete: false,
  },
  {
    id: "10",
    name: "Functions",
    deadline: new Date(2020, 10, 5),
    type: "LEARN",
    isComplete: false,
  },
];

As you can see, all that's needed for a fixed table header is a container component around the Table component. You can now scroll the rows of the table in a vertical direction while the header remains sticky at the top of the table.