SolidJS•2mo ago

solid func for beforeunload

I have some user data which I want to save before tab is closed. Using onCleanup() doesn't save the data. I had to write this, but wondering if solid provides something similar

  const handleUnload = (_: BeforeUnloadEvent) => {
    saveData();
  };
  onMount(() => {
    window.addEventListener("beforeunload", handleUnload);
    onCleanup(() => {
      saveData();
      window.removeEventListener("beforeunload", handleUnload);
    });
  });

  const handleUnload = (_: BeforeUnloadEvent) => {
    saveData();
  };
  onMount(() => {
    window.addEventListener("beforeunload", handleUnload);
    onCleanup(() => {
      saveData();
      window.removeEventListener("beforeunload", handleUnload);
    });
  });

2 Replies

Alex Lohr•5w ago

We do have a community primitive to save a bit of work: https://primitives.solidjs.community/package/event-listener#createeventlistener

Solid Primitives

A library of high-quality primitives that extend SolidJS reactivity

ATA noob•5w ago

export const Component = () => {
  createEventListener(window, "beforeunload", () => saveData());
  onCleanup(() => saveData());
  return <></>
}

export const Component = () => {
  createEventListener(window, "beforeunload", () => saveData());
  onCleanup(() => saveData());
  return <></>
}

Is this the recommended way? or should I just put the beforeunload listener directly on window

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solid func for beforeunload