由于是弹窗，是父子组件，之前使用[watch监听]但是无法初始化已选择
要使用nextTick方法+element表格中的toggleRowSelection()方法
记得在table标签中添加ref
<el-table v-loading="loading" border ref="multipleTable" @row-click="handleSelectionChange">
created() {
this.initAlreadySelectItem()
},
// 初始化已选中的信息
initAlreadySelectItem() {
if (!this.detectionData) {
return
}
let alreadySelectIds = this.detectionData.map(e => e.detectionInfoId)
let detectionDataIdObj = {}
this.detectionData.forEach((item, i) => {
detectionDataIdObj[item.detectionInfoId] = item.multiple
})
let needToggleList = this.DetectionInfoList.filter(item => alreadySelectIds.includes(item.id))
if (needToggleList && needToggleList.length > 0) {
needToggleList.forEach((v, i) => {
this.$set(v, 'multiple', detectionDataIdObj[v.id])
// v.multiple = detectionDataIdObj[v.id]
this.$nextTick(() => this.$refs.multipleTable.toggleRowSelection(v, true))
})
}
},
