大家好！第一次写文章，看到网上很多vue3的hooks写法，但是我觉得总是少点灵魂和感觉，达不到自己和大家心中想要的，这次我就给大家分享一下使用vue3的心得和体会。
1.vue3代码最佳实践
大家请看，引用了尤雨溪写的代码。函数和变量全部都是在20多行之内开始暴露出来，极大的增强代码的阅读速度，并且能够很快的上手，其实很多人也是这么写的，但是是封装成js文件，为了封装而封装得不偿失，等到复用的时候再抽出来就好啦！如果能够帮到你，请给我点个赞谢谢！
<script setup>
import { useQuery, mutate } from 'vue-apollo'
import { ref, reactive, watch, nextTick } from 'vue'
import { onBeforeRouteLeave } from 'vue-router'
// Reusable functions not specific to this component
import { useNetworkState } from '@/functions/network'
import { usePathUtils } from '@/functions/path'
import { resetCwdOnLeave, useCwdUtils } from '@/functions/cwd'
// GraphQL
import FOLDER_CURRENT from '@/graphql/folder/folderCurrent.gql'
import FOLDERS_FAVORITE from '@/graphql/folder/favoriteFolders.gql'
import FOLDER_OPEN from '@/graphql/folder/folderOpen.gql'
import FOLDER_OPEN_PARENT from '@/graphql/folder/folderOpenParent.gql'
import FOLDER_SET_FAVORITE from '@/graphql/folder/folderSetFavorite.gql'
import PROJECT_CWD_RESET from '@/graphql/project/projectCwdReset.gql'
import FOLDER_CREATE from '@/graphql/folder/folderCreate.gql'
// Misc
import { isValidMultiName } from '@/util/folders'
const SHOW_HIDDEN = 'vue-ui.show-hidden-folders'
// Network
const { networkState } = useNetworkState()
// Folder
const { folders, currentFolderData } = useCurrentFolderData(networkState)
const folderNavigation = useFolderNavigation({ networkState, currentFolderData })
const { favoriteFolders, toggleFavorite } = useFavoriteFolders(currentFolderData)
const { showHiddenFolders } = useHiddenFolders()
const createFolder = useCreateFolder(folderNavigation.openFolder)
// Current working directory
resetCwdOnLeave()
const { updateOnCwdChanged } = useCwdUtils()
// Utils
const { slicePath } = usePathUtils()
// Reusable functions specific to this component
function useCurrentFolderData (networkState) {
const folders = ref(null)
const currentFolderData = useQuery({
query: FOLDER_CURRENT,
fetchPolicy: 'networkState-only',
networkState,
async result () {
await nextTick()
folders.scrollTop = 0
}
}, {})
return {
folders,
currentFolderData
}
}
function useFolderNavigation ({ networkState, currentFolderData }) {
// Path editing
const pathEditing = reactive({
editingPath: false,
editedPath: '',
})
// DOM ref
const pathInput = ref(null)
async function openPathEdit () {
pathEditing.editedPath = currentFolderData.path
pathEditing.editingPath = true
await nextTick()
pathInput.focus()
}
function submitPathEdit () {
openFolder(pathEditing.editedPath)
}
// Folder opening
const openFolder = async (path) => {
pathEditing.editingPath = false
networkState.error = null
networkState.loading++
try {
await mutate({
mutation: FOLDER_OPEN,
variables: {
path
},
update: (store, { data: { folderOpen } }) => {
store.writeQuery({ query: FOLDER_CURRENT, data: { currentFolderData: folderOpen } })
}
})
} catch (e) {
networkState.error = e
}
networkState.loading--
}
async function openParentFolder () {
pathEditing.editingPath = false
networkState.error = null
networkState.loading++
try {
await mutate({
mutation: FOLDER_OPEN_PARENT,
update: (store, { data: { folderOpenParent } }) => {
store.writeQuery({ query: FOLDER_CURRENT, data: { currentFolderData: folderOpenParent } })
}
})
} catch (e) {
networkState.error = e
}
networkState.loading--
}
// Refresh
function refreshFolder () {
openFolder(currentFolderData.path)
}
return {
pathInput,
pathEditing,
openPathEdit,
submitPathEdit,
openFolder,
openParentFolder,
refreshFolder
}
}
function useFavoriteFolders (currentFolderData) {
const favoriteFolders = useQuery(FOLDERS_FAVORITE, [])
async function toggleFavorite () {
await mutate({
mutation: FOLDER_SET_FAVORITE,
variables: {
path: currentFolderData.path,
favorite: !currentFolderData.favorite
},
update: (store, { data: { folderSetFavorite } }) => {
store.writeQuery({ query: FOLDER_CURRENT, data: { currentFolderData: folderSetFavorite } })
let data = store.readQuery({ query: FOLDERS_FAVORITE })
// TODO this is a workaround
// See: https://github.com/apollographql/apollo-client/issues/4031#issuecomment-433668473
data = {
favoriteFolders: data.favoriteFolders.slice()
}
if (folderSetFavorite.favorite) {
data.favoriteFolders.push(folderSetFavorite)
} else {
const index = data.favoriteFolders.findIndex(
f => f.path === folderSetFavorite.path
)
index !== -1 && data.favoriteFolders.splice(index, 1)
}
store.writeQuery({ query: FOLDERS_FAVORITE, data })
}
})
}
return {
favoriteFolders,
toggleFavorite
}
}
function useHiddenFolders () {
const showHiddenFolders = ref(localStorage.getItem(SHOW_HIDDEN) === 'true')
watch(showHiddenFolders, value => {
if (value) {
localStorage.setItem(SHOW_HIDDEN, 'true')
} else {
localStorage.removeItem(SHOW_HIDDEN)
}
}, { lazy: true })
return {
showHiddenFolders
}
}
function useCreateFolder (openFolder) {
const showNewFolder = ref(false)
const newFolderName = ref('')
const newFolderValid = computed(() => isValidMultiName(newFolderName.value))
async function createFolder () {
if (!newFolderValid.value) return
const result = await mutate({
mutation: FOLDER_CREATE,
variables: {
name: newFolderName.value
}
})
openFolder(result.data.folderCreate.path)
newFolderName.value = ''
showNewFolder.value = false
}
return {
showNewFolder,
newFolderName,
newFolderValid,
createFolder
}
}
</script>
