代码实现：
<template> <div ref="mains" class="search"></div></template><script setup lang="ts">import { ref, onMounted } from 'vue'const mains = ref()onMounted(() => { const height = mains.value.clientHeight console.log(height, 1234)})</script><style scoped lang="less">.search { width: 100px; height: 100px; margin: 0 auto; background-color: greenyellow;}</style>输出结果：
