> For the complete documentation index, see [llms.txt](https://documentation.sceenic.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.sceenic.co/watch-together-sdk/sscale-confluence-tutorials/web/sample-application/how-to-turn-on-and-off-video-and-audio.md).

# How to turn on and off video and audio

```javascript
let cameraState = true;
let micState = true;
```

To turn on and off video, use the `toggleVideo` function.

```javascript
function toggleVideo(){
	if(cameraState){
		WTSDK.Participant.disableVideo();
		cameraState = false;
		const video = document.getElementById('vide_control');
		video.classList.remove('vcam_on');
		video.classList.add('vcam_off');
	}else {
		WTSDK.Participant.enableVideo();
		cameraState = true;
		const video = document.getElementById('vide_control');
		video.classList.remove('vcam_off');
		video.classList.add('vcam_on');
	}
}
```

There is a similar function available for working with audio (`toggleAudio`).

```javascript
function toggleAudio() {
	if(micState){
		WTSDK.Participant.disableAudio();
		micState = false;
		const video = document.getElementById('audio_control');
		video.classList.remove('mic_on');
		video.classList.add('mic_off');
	}else {
		WTSDK.Participant.enableAudio();
		micState = true;
		const video = document.getElementById('audio_control');
		video.classList.remove('mic_off');
		video.classList.add('mic_on');
	}
}
```