JS实现全屏模式

<template>
  <button @click="handleClick">切换全屏模式</button>
</template>

const handleClick = () => {
	if(document.fullscreenElement) {
		document.exixFullscreen()
	} else {
		document.documentElement.requestFullscreen()
	}
}

// 方式1
document.onfullscreenchange = () => {
	// do something
}

// 方式2
document.addEventListener('fullscreenchange', () => {
	// do something
})