
<script>
function devicepix(){
let currentPixelRatio = window.devicePixelRatio;
if (currentPixelRatio !== lastPixelRatio) {
console.log('页面缩放变化了');
}
lastPixelRatio = currentPixelRatio;
console.log(lastPixelRatio)
}
let lastPixelRatio = window.devicePixelRatio;
window.addEventListener('resize', devicepix);
devicepix()
</script>