isPending

Returns true if any reactive read inside fn is showing a stale value while newer async work is pending. Does not subscribe — pair with a tracked memo if you want to react to pending status changes.

Useful for showing inline transition indicators alongside the previous value (rather than swapping to a <Loading> fallback). Because fn is read normally, isPending participates in Loading/SSR readiness the same way the read itself would.

Import

import { isPending } from "solid-js";

Type signature

function isPending(fn: () => any): boolean;

Examples

const pending = createMemo(() => isPending(() => user()));

<button disabled={pending()}>{pending() ? "Saving…" : "Save"}</button>

<button disabled={isPending(() => user())}>Save</button>