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+---
+title: fullscreen
+tags: browser,beginner
+---
+
+This snippet lets you start and stop the fullscreen mode
+
+- Uses `document.documentElement.requestFullscreen()` and `document.exitFullscreen()` functions to change the browsers state.
+- If no parameter is given, it will default to enable the fullscreen mode.
+- Usage is limited to user interaction or a device orientation change; otherwise it will fail.
+
+```js
+const fullscreen = (mode=true) => {
+  if (mode) {
+    document.documentElement.requestFullscreen();
+  } else {
+    document.exitFullscreen();
+  }};
+```
+
+```js
+fullscreen(); // Browser in fullscreen mode
+fullscreen(false); // Browser no longer in fullscreen mode
+```