Vite项目怎么进行屏幕适配？两种方案分享

npm i postcss-pxtorem autoprefixer amfe-flexible --save-dev

module.exports = {
	plugins: {
		autoprefixer: {
			overrideBrowserslist: [
				"Android 4.1",
				"iOS 7.1",
				"Chrome > 31",
				"ff > 31",
				"ie >= 8",
				"last 10 versions", // 所有主流浏览器最近10版本用
			],
			grid: true,
		},
		"postcss-pxtorem": {
			rootValue: 192, // 设计稿宽度的1/ 10 例如设计稿按照 1920设计 此处就为192
			propList: ["*", "!border"], // 除 border 外所有px 转 rem
			selectorBlackList: [".el-"], // 过滤掉.el-开头的class，不进行rem转换
		},
	},
};

import "amfe-flexible/index.js";

import { ref } from "vue";

export default function windowResize() {
	// * 指向最外层容器
	const screenRef = ref();
	// * 定时函数
	const timer = ref(0);
	// * 默认缩放值
	const scale = {
		width: "1",
		height: "1",
	};
    
	// * 设计稿尺寸（px）
	const baseWidth = 1920;
	const baseHeight = 1080;

	// * 需保持的比例（默认1.77778）
	const baseProportion = parseFloat((baseWidth / baseHeight).toFixed(5));
	const calcRate = () => {
		// 当前宽高比
		const currentRate = parseFloat(
			(window.innerWidth / window.innerHeight).toFixed(5)
		);
		if (screenRef.value) {
			if (currentRate > baseProportion) {
				// 表示更宽
				scale.width = (
					(window.innerHeight * baseProportion) /
					baseWidth
				).toFixed(5);
				scale.height = (window.innerHeight / baseHeight).toFixed(5);
				screenRef.value.style.transform = `scale(${scale.width}, ${scale.height})`;
			} else {
				// 表示更高
				scale.height = (
					window.innerWidth /
					baseProportion /
					baseHeight
				).toFixed(5);
				scale.width = (window.innerWidth / baseWidth).toFixed(5);
				screenRef.value.style.transform = `scale(${scale.width}, ${scale.height})`;
			}
		}
	};

	const resize = () => {
		clearTimeout(timer.value);
		timer.value = window.setTimeout(() => {
			calcRate();
		}, 200);
	};

	// 改变窗口大小重新绘制
	const windowDraw = () => {
		window.addEventListener("resize", resize);
	};

	// 改变窗口大小重新绘制
	const unWindowDraw = () => {
		window.removeEventListener("resize", resize);
	};

	return {
		screenRef,
		calcRate,
		windowDraw,
		unWindowDraw,
	};
}