Mode / Unicast
Launch the server in unicast mode and use q.client to manage client-local state.
from h2o_wave import main, app, Q, ui
@app('/demo')
async def serve(q: Q):
count = q.client.count or 0
if not q.client.initialized:
q.page['example'] = ui.form_card(box='1 1 2 1', items=[
ui.button(name='increment', label=f'Count={count}')
])
q.client.initialized = True
if q.args.increment:
q.client.count = count = count + 1
q.page['example'].items[0].button.label = f'Count={count}'
await q.page.save()