`useDelValuesCallback`

The useDelValuesCallback hook returns a callback that can be used to remove all of the keyed value data in a Store.

useDelValuesCallback(
  storeOrStoreId?: StoreOrStoreId,
  then?: (store: Store) => void,
  thenDeps?: DependencyList,
): Callback

	Type	Description
`storeOrStoreId?`	`StoreOrStoreId`	The `Store` to be updated: omit for the default context `Store`, provide an `Id` for a named context `Store`, or provide an explicit reference.
`then?`	`(store: Store) => void`	A function which is called after the deletion, with a reference to the `Store`.
`thenDeps?`	`DependencyList`	An optional array of dependencies for the `then` function, which, if any change, result in the regeneration of the callback. This parameter defaults to an empty array.
returns	`Callback`	A callback for subsequent use.

This hook is useful, for example, when creating an event handler that will delete data in a Store.

For convenience, you can optionally provide a then function (with its own set of dependencies) which will be called just after the Store has been updated. This is a useful place to call the addCheckpoint method, for example, if you wish to add the deletion to your application's undo stack.

The Store to which the callback will make the deletion (indicated by the hook's storeOrStoreId parameter) is always automatically used as a hook dependency for the callback.

Example

This example uses the useDelValuesCallback hook to create an event handler which deletes from the Store when the span element is clicked.

import {useDelValuesCallback, useValues} from 'tinybase/ui-react';
import React from 'react';
import {createRoot} from 'react-dom/client';
import {createStore} from 'tinybase';

const store = createStore().setValues({open: true});
const App = () => {
  const handleClick = useDelValuesCallback(store, () =>
    console.log('Deleted'),
  );
  return (
    <span id="span" onClick={handleClick}>
      {JSON.stringify(useValues(store))}
    </span>
  );
};

const app = document.createElement('div');
createRoot(app).render(<App />);
const span = app.querySelector('span');
console.log(span.innerHTML);
// -> '{"open":true}'

// User clicks the <span> element:
// -> span MouseEvent('click', {bubbles: true})
// -> 'Deleted'

console.log(span.innerHTML);
// -> '{}'

Since

v3.0.0