弹窗里要放一个table表格,表格高度跟随弹窗高度的变化而变化。
代码如下:
<template><el-dialog ref="lookDialogRef" v-model="dialogLook.visible" :title="dialogLook.title" width="1000px" append-to-body @close="closeDialog" @open="openDialog"><el-table :data="tableData" :height="dialogHeight"><el-table-column v-if="true" label="编号" align="center" prop="code" /><el-table-column v-if="true" label="姓名" align="center" prop="name" /><el-table-column v-if="true" label="年龄" align="center" prop="age" /></el-table></el-dialog>
</template><script setup lang="ts">
const dialogHeight = ref('200px')
const lookDialogRef = ref(null)
const lookDialog = () => {console.log(lookDialogRef.value.$el.querySelector('.el-dialog__body'))
}
onMounted(() => {window.onresize = () => {dialogLook.visible && lookDialog()}
})
</script>
报错如下:
原因:写法有问题。
//少写了一个dialogContentRef
console.log(lookDialogRef.value.dialogContentRef.$el.querySelector('.el-dialog__body'))
知识点:
ElementPlus中的dialogContentRef是一个引用(ref),用于获取`el-dialog组件内部的具体DOM元素,特别是对话框的内容区域。
在ElementPlus中,el-dialog组件提供了dialogContentRef属性,通过这个属性可以获取到对话框内容的DOM元素。这在进行一些自定义操作时非常有用,比如动态设置对话框内容的高度、宽度或者进行其他DOM操作。
最终代码:(获取元素可视高度)
<template><el-dialog ref="lookDialogRef" v-model="dialogLook.visible" :title="dialogLook.title" width="1000px" append-to-body @close="closeDialog" @open="openDialog"><el-table :data="tableData" :height="tableHeight"><el-table-column v-if="true" label="编号" align="center" prop="code" /><el-table-column v-if="true" label="姓名" align="center" prop="name" /><el-table-column v-if="true" label="年龄" align="center" prop="age" /></el-table></el-dialog>
</template><script setup lang="ts">
const tableHeight = ref('200px')
const lookDialogRef = ref(null)
const openDialog = () => {nextTick(() => {let h = lookDialogRef.value.dialogContentRef.$el.querySelector('.el-dialog__body').clientHeight - 130tableHeight.value = h + 'px'})
}
onMounted(() => {window.onresize = () => {dialogLook.visible && openDialog()}
})
</script>
注:
// 获取实际高度(包括padding和border)
const actualHeight = element.offsetHeight;// 获取可视高度(不包括滚动条)
const visualHeight = element.clientHeight;