Show number of results per page

interface User {
  id: string;
  firstName: string;
  lastName: string;
  age: number;
}

const [users, setUsers] = useState<User[]>([]);
  const [pageUsers, setPageUsers] = useState<User[]>([]);
  const [page, setPage] = useState<number>(1);
  const [perPage, setPerPage] = useState<number>(10);

  useEffect(() => {
    // Generate sample data
    const firstNames = ["Emma", "Liam", "Olivia", "Noah", "Ava", "James", "Sophia", "William", "Isabella", "Oliver", "Mia", "Benjamin", "Charlotte", "Elijah", "Amelia", "Lucas", "Harper", "Mason", "Evelyn", "Logan"];
    const lastNames = ["Smith", "Johnson", "Williams", "Brown", "Jones", "Garcia", "Miller", "Davis", "Rodriguez", "Martinez", "Wilson", "Anderson", "Taylor", "Thomas", "Moore", "Jackson", "Martin", "Lee", "Thompson", "White"];
    const _users: User[] = [];
    for (let i = 1; i <= 100; i++) {
      _users.push({
        id: `user-${i}`,
        firstName: firstNames[(i - 1) % firstNames.length],
        lastName: lastNames[(i - 1) % lastNames.length],
        age: 20 + (i % 40),
      });
    }
    setUsers(_users);
    setPageUsers(_users.slice(0, perPage));
  }, [perPage]);

  function changePage(newPage: number) {
    const offset = (newPage - 1) * perPage;
    const _users = users.slice(offset, offset + perPage);
    setPage(newPage);
    setPageUsers(_users);
  }

  function handlePerPageCountChangeEvent(event: GoabDropdownOnChangeDetail) {
    const perPageValue = parseInt(event.value || "10");
    setPage(1);
    setPerPage(perPageValue);
    const _users = users.slice(0, perPageValue);
    setPageUsers(_users);
  }

<GoabxTable width="100%" mb="xl">
        <thead>
          <tr>
            <th>First name</th>
            <th>Last name</th>
            <th>Age</th>
          </tr>
        </thead>
        <tbody>
          {pageUsers.map((u) => (
            <tr key={u.id}>
              <td>{u.firstName}</td>
              <td>{u.lastName}</td>
              <td>{u.age}</td>
            </tr>
          ))}
        </tbody>
      </GoabxTable>

      <GoabBlock alignment="center" width="100%">
        <GoabBlock mb="m" alignment="center">
          Show
          <GoabxDropdown
            onChange={handlePerPageCountChangeEvent}
            value={perPage.toString()}
            width="9ch"
          >
            <GoabxDropdownItem value="10" label="10" />
            <GoabxDropdownItem value="20" label="20" />
            <GoabxDropdownItem value="30" label="30" />
          </GoabxDropdown>
          <span style={{ width: "75px" }}>per page</span>
        </GoabBlock>
        <GoabSpacer hSpacing="fill" />
        <GoabxPagination
          itemCount={users.length}
          perPageCount={perPage}
          pageNumber={page}
          onChange={(event) => changePage(event.page)}
        />
      </GoabBlock>

users: User[] = [];
  pageUsers: User[] = [];
  page = 1;
  perPage = 10;
  total = 100;

  constructor() {
    this.pageUsers = this.prepareUsers().slice(0, this.perPage);
  }

  prepareUsers(): User[] {
    const firstNames = ["Emma", "Liam", "Olivia", "Noah", "Ava", "James", "Sophia", "William", "Isabella", "Oliver", "Mia", "Benjamin", "Charlotte", "Elijah", "Amelia", "Lucas", "Harper", "Mason", "Evelyn", "Logan"];
    const lastNames = ["Smith", "Johnson", "Williams", "Brown", "Jones", "Garcia", "Miller", "Davis", "Rodriguez", "Martinez", "Wilson", "Anderson", "Taylor", "Thomas", "Moore", "Jackson", "Martin", "Lee", "Thompson", "White"];
    for (let i = 1; i <= this.total; i++) {
      this.users.push({
        id: `user-${i}`,
        firstName: firstNames[(i - 1) % firstNames.length],
        lastName: lastNames[(i - 1) % lastNames.length],
        age: 20 + (i % 40),
      });
    }
    return this.users;
  }

  handlePageChange(event: GoabPaginationOnChangeDetail): void {
    this.page = event.page;
    const offset = (this.page - 1) * this.perPage;
    this.pageUsers = this.users.slice(offset, offset + this.perPage);
  }

  handlePerPageCountChangeEvent(event: GoabDropdownOnChangeDetail): void {
    this.page = 1;
    this.perPage = Number(event.value);
    this.pageUsers = this.users.slice(0, this.perPage);
  }

<goabx-table width="100%" mb="xl">
  <thead>
    <tr>
      <th>First name</th>
      <th>Last name</th>
      <th>Age</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor="let user of pageUsers">
      <td>{{ user.firstName }}</td>
      <td>{{ user.lastName }}</td>
      <td>{{ user.age }}</td>
    </tr>
  </tbody>
</goabx-table>

<goab-block alignment="center" width="100%">
  <goab-block mb="m" alignment="center">
    Show
    <goabx-dropdown
      (onChange)="handlePerPageCountChangeEvent($event)"
      value="10"
      width="9ch">
      <goabx-dropdown-item value="10" label="10"></goabx-dropdown-item>
      <goabx-dropdown-item value="20" label="20"></goabx-dropdown-item>
      <goabx-dropdown-item value="30" label="30"></goabx-dropdown-item>
    </goabx-dropdown>
    <span style="width: 75px">per page</span>
  </goab-block>

  <goab-spacer hSpacing="fill"></goab-spacer>

  <goabx-pagination
    [itemCount]="users.length"
    [perPageCount]="perPage"
    [pageNumber]="page"
    (onChange)="handlePageChange($event)">
  </goabx-pagination>
</goab-block>

const firstNames = ["Emma", "Liam", "Olivia", "Noah", "Ava", "James", "Sophia", "William", "Isabella", "Oliver", "Mia", "Benjamin", "Charlotte", "Elijah", "Amelia", "Lucas", "Harper", "Mason", "Evelyn", "Logan"];
const lastNames = ["Smith", "Johnson", "Williams", "Brown", "Jones", "Garcia", "Miller", "Davis", "Rodriguez", "Martinez", "Wilson", "Anderson", "Taylor", "Thomas", "Moore", "Jackson", "Martin", "Lee", "Thompson", "White"];
const users = [];
for (let i = 1; i <= 100; i++) {
  users.push({
    id: "user-" + i,
    firstName: firstNames[(i - 1) % firstNames.length],
    lastName: lastNames[(i - 1) % lastNames.length],
    age: 20 + (i % 40),
  });
}

let page = 1;
let perPage = 10;

const tableBody = document.getElementById("table-body");
const pagination = document.getElementById("pagination");
const dropdown = document.getElementById("per-page-dropdown");

function renderTable() {
  const offset = (page - 1) * perPage;
  const pageUsers = users.slice(offset, offset + perPage);

  tableBody.innerHTML = pageUsers
    .map(
      (u) => `
      <tr>
        <td>${u.firstName}</td>
        <td>${u.lastName}</td>
        <td>${u.age}</td>
      </tr>
    `
    )
    .join("");
}

pagination.addEventListener("_change", (e) => {
  page = e.detail.page;
  renderTable();
});

dropdown.addEventListener("_change", (e) => {
  perPage = parseInt(e.detail.value);
  page = 1;
  pagination.setAttribute("perpagecount", perPage);
  pagination.setAttribute("pagenumber", "1");
  renderTable();
});

renderTable();

<goa-table version="2" width="100%" mb="xl">
  <table width="100%">
    <thead>
      <tr>
        <th>First name</th>
        <th>Last name</th>
        <th>Age</th>
      </tr>
    </thead>
    <tbody id="table-body">
      <!-- Rows populated by JavaScript -->
    </tbody>
  </table>
</goa-table>

<goa-block alignment="center" width="100%">
  <goa-block mb="m" alignment="center">
    Show
    <goa-dropdown version="2" id="per-page-dropdown" value="10" width="9ch">
      <goa-dropdown-item value="10" label="10"></goa-dropdown-item>
      <goa-dropdown-item value="20" label="20"></goa-dropdown-item>
      <goa-dropdown-item value="30" label="30"></goa-dropdown-item>
    </goa-dropdown>
    <span style="width: 75px">per page</span>
  </goa-block>

  <goa-spacer hspacing="fill"></goa-spacer>

  <goa-pagination version="2"
    id="pagination"
    itemcount="100"
    perpagecount="10"
    pagenumber="1">
  </goa-pagination>
</goa-block>