Elementui-table 多选框实现单选功能

const checked = ref<[]>([])
const tabelRef = ref<any>(null)
const handleSelectChange = (arr: []) => {
    if (checked.value.length>0) {
        if (arr.length > 1) {
            checked.value = [arr[1]]
            tableRef.value.clearSelection()
        } else {
            if (!arr.length) tableRef.value.toggleRowSelection(checked.value[0], true)
        }
    } else {
        checked.value = arr
    }
}