vue之viewport的设置和rem的设置

1.<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no">

<script>
export default{}
document.addEventListener('DOMContentLoaded',()=>{
const html = document.querySelector('html')
let fontSize = window.innerWidth /10
fontSize = fontSize>50?50:fontSize
html.style.fontSize = fontSize+'px'
})
</script>