const onModelValueChangeByKey = (key: string) => (...value: unknown[]) => { emit('field:change', key, ...value) } 改成vue2 methods的写法
时间: 2024-03-13 09:44:40 浏览: 19
在 Vue2 中,你可以将 `onModelValueChangeByKey` 方法作为组件的一个方法,如下所示:
```
methods: {
onModelValueChangeByKey(key) {
return function(...value) {
this.$emit('field:change', key, ...value);
}
}
}
```
然后在组件中使用它时,可以这样调用:
```
<input type="text" v-model="name" @change="onModelValueChangeByKey('name')">
```
其中,`onModelValueChangeByKey('name')` 返回一个函数,该函数接受一个或多个参数,并将 `field:change` 事件与 `key` 和 `value` 数据一起发出。`@change` 监听器调用此函数并传递正确的 `key` 值。
相关问题
优化此代码 const openKeys = ref<string[]>([]) const selectedKeys = ref<string[]>([]) const { currentMenu, currentMenuTree, currentMenuList } = storeToRefs( useLayoutStore(), ) const rootSubmenuKeys = currentMenuList.value.filter((v: any) => { if (v.type === 0) { return v.parentId } }) watch( () => currentMenu, () => { openKeys.value = [currentMenu.value?.parentId] selectedKeys.value = [currentMenu.value?.id] }, { immediate: true }, ) const router = useRouter() /** * 点击事件 * @param e 事件对象 */ const handleClick = (e: any) => { const item = currentMenuList.value.find((_) => _.id === e.key) if (item) { router.push(item.path) } } /** * SubMenu 展开/关闭的回调 * @param e 展开的openKeys */ const onOpenChange = (e: any) => { const latestOpenKey = e.find((key: any) => openKeys.value.indexOf(key) === -1) if (rootSubmenuKeys.indexOf(latestOpenKey) === -1) { openKeys.value = e } else { openKeys.value = latestOpenKey ? [latestOpenKey] : [] } }
There are a few optimizations that could be made to this code:
1. Instead of using `ref` for `openKeys` and `selectedKeys`, you can use `reactive` to make the code more concise:
```
const state = reactive({
openKeys: [],
selectedKeys: [],
})
```
2. Instead of using `storeToRefs` to convert the store state to refs, you can use the `toRefs` function, which is shorter and more concise:
```
const { currentMenu, currentMenuTree, currentMenuList } = toRefs(useLayoutStore())
```
3. Instead of using `watch` to watch the `currentMenu` state changes, you can use a computed property to update the `openKeys` and `selectedKeys` arrays:
```
const selectedMenu = computed(() => {
const item = currentMenuList.value.find((_) => _.id === currentMenu.value?.id)
return [item?.id] || []
})
const parentMenu = computed(() => {
const item = currentMenuList.value.find((_) => _.id === currentMenu.value?.parentId)
return [item?.id] || []
})
watch([selectedMenu, parentMenu], ([selected, parent]) => {
state.selectedKeys = selected
state.openKeys = parent
})
```
4. Instead of using `router.push` in the `handleClick` function, you can use the `router.push` method directly in the template:
```
<Menu.Item :key="item.id" :to="item.path">{{ item.name }}</Menu.Item>
```
5. Finally, instead of using `rootSubmenuKeys` to filter the list of menu items, you can use a computed property to filter the list of menu items based on their type:
```
const subMenuItems = computed(() => {
return currentMenuList.value.filter((v: any) => v.type === 0 && v.parentId)
})
```
By applying these optimizations, the code can be simplified and made more concise.
const userListData = ref([]); const handleAddUser = async (val: any) => { userGroup.value = val.cg_name; dialogTableVisible.value = true; const res = await getUserListSelect(); res.data.map((im: any, index: any) => { userListData.value.push({ key: index, label: im.contact_alias, name: im.contact_name, }); }); };
这段代码是一个 Vue 3 组件中的 TypeScript 代码,它的作用是在点击添加用户按钮时,获取用户列表数据,并将数据存储到 `userListData` 变量中。具体来说,这段代码中:
- `const userListData = ref([]);` 定义了一个响应式变量 `userListData`,用来存储用户列表数据。
- `const handleAddUser = async (val: any) => { ... }` 定义了一个异步函数 `handleAddUser`,它会在点击添加用户按钮时被触发。
- `userGroup.value = val.cg_name;` 将用户组名称存储到 `userGroup` 变量中。
- `dialogTableVisible.value = true;` 打开用户列表对话框。
- `const res = await getUserListSelect();` 通过调用 `getUserListSelect` 函数获取用户列表数据。
- `res.data.map((im: any, index: any) => { ... });` 遍历用户列表数据,并将每个用户的 `contact_alias` 和 `contact_name` 存储到 `userListData` 变量中。
需要注意的是,这段代码中有一些类型定义比较模糊,例如 `any` 类型的参数和 `im` 和 `index` 变量的类型也没有明确指定。如果可能的话,建议将这些类型定义更加明确,以便在代码中发现潜在的类型错误。