Add onWindow hooks

snippets/useOnWindowResize.md

@@ -0,0 +1,37 @@
+---
+title: useOnWindowResize
+tags: hooks,effect,intermediate
+firstSeen: 2021-12-01T05:00:00-04:00
+---
+
+Executes a callback whenever the window is resized.
+
+- Use the `useRef()` hook to create a variable, `listener`, which will hold the listener reference.
+- Use the `useEffect()` hook and `EventTarget.addEventListener()` to listen to the `'resize'` event of the `window` global object.
+- Use `EventTarget.removeEventListener()` to remove any existing listeners and clean up when the component unmounts.
+
+```jsx
+const useOnWindowResize = callback => {
+  const listener = React.useRef(null);
+
+  React.useEffect(() => {
+    if (listener.current)
+      window.removeEventListener('resize', listener.current);
+    listener.current = window.addEventListener('resize', callback);
+    return () => {
+      window.removeEventListener('resize', listener.current);
+    };
+  }, [callback]);
+};
+```
+
+```jsx
+const App = () => {
+  useOnWindowResize(() =>
+    console.log(`window size: (${window.innerWidth}, ${window.innerHeight})`)
+  );
+  return <p>Resize the window and check the console</p>;
+};
+
+ReactDOM.render(<App />, document.getElementById('root'));
+```

snippets/useOnWindowScroll.md

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+---
+title: useOnWindowScroll
+tags: hooks,effect,intermediate
+firstSeen: 2021-12-08T05:00:00-04:00
+---
+
+Executes a callback whenever the window is scrolled.
+
+- Use the `useRef()` hook to create a variable, `listener`, which will hold the listener reference.
+- Use the `useEffect()` hook and `EventTarget.addEventListener()` to listen to the `'scroll'` event of the `window` global object.
+- Use `EventTarget.removeEventListener()` to remove any existing listeners and clean up when the component unmounts.
+
+```jsx
+const useOnWindowScroll = callback => {
+  const listener = React.useRef(null);
+
+  React.useEffect(() => {
+    if (listener.current)
+      window.removeEventListener('scroll', listener.current);
+    listener.current = window.addEventListener('scroll', callback);
+    return () => {
+      window.removeEventListener('scroll', listener.current);
+    };
+  }, [callback]);
+};
+```
+
+```jsx
+const App = () => {
+  useOnWindowScroll(() => console.log(`scroll Y: ${window.pageYOffset}`));
+  return <p style={{ height: '300vh' }}>Scroll and check the console</p>;
+};
+
+ReactDOM.render(<App />, document.getElementById('root'));
+```