Helper Functions 
usePlayer provides multiple toggle* helper functions.
togglePlay 
The togglePlay function pauses / unpauses the video.
vue
<script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { togglePlay } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="togglePlay">Pause / Unpause</button>
</template><script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { togglePlay } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="togglePlay">Pause / Unpause</button>
</template>toggleMute 
The toggleMute function mutes / unmutes the player.
vue
<script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleMute } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleMute">Mute / Unmute</button>
</template><script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleMute } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleMute">Mute / Unmute</button>
</template>toggleLoop 
The toggleLoop function toggles playlist looping on / off.
vue
<script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleLoop } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleLoop">Loop / No loop</button>
</template><script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleLoop } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleLoop">Loop / No loop</button>
</template>See Reference
toggleShuffle 
The toggleShuffle function toggles playlist shuffling on / off.
vue
<script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleShuffle } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleShuffle">Shuffle / No shuffle</button>
</template><script setup lang="ts">
import { usePlayer } from '@vue-youtube/core';
import { ref } from 'vue';
const player = ref();
const { toggleShuffle } = usePlayer('dQw4w9WgXcQ', player);
</script>
<template>
  <div ref="player" />
  <button @click="toggleShuffle">Shuffle / No shuffle</button>
</template>See Reference