Define a component with props and defualt props value <script setup lang="ts">import{ref,onMounted}from'vue'importfetchCountfrom'../services/fetchCount'interfaceProps{limit:number,alertMessageOnLimit?:string}constprops=withDefaults(defineProps<Props>(),{alertMessageOnLimit:'can not go any higher'...
{ defineStore } from "pinia"; import persistedstateConfig from "@/store/config/index"; interface ThemeConfig { collapsed: boolean; } export const useThemeConfig = defineStore("theme-config", { state: () : ThemeConfig => ({ collapsed: false, // 是否...
{ reactive } from 'vue'; import MyList from './components/MyList.vue'; interface Item { /** 唯一标识 */ id: string; /** 行名称 */ name: string; /** 行描述 */ desc: string; } defineOptions({ name: 'generic-component' }); const list = reactive<Item[]>([ { id: '1', ...
interface UserInfo { id: number, name: string, age: number } defineProps<{ name: string userInfo: UserInfo }>() 复制代码 defineEmit 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <script lang="ts" setup> import { defineEmit } from 'vue'; // expects emits options const emit = de...
interfacePerson{ firstName:string lastName:string } functiongreeter(person:Person) { return'Hello, '+ person.firstName+' '+ person.lastName } letuser = { firstName:'Yee', lastName:'Huang' } console.log(greeter(user)) 类 最后,让我们使用类来改写这个例子。 TypeScript 支持 JavaScript 的新特...
在vue2版本时候,假如你要使用typescript,需要借用vue-class-component、vue-property-decorator 等装饰器加以判断,而且要改成特定的代码结构让vue去识别,并不方便。 到了Vue3的时代,框架已经完美兼容了typescript,而且配置也简单,对代码入侵也小,给开发者带来了很大便利。 Vite Vite是一种新型前端构建工具,能够显...
type IteratorResult<T, TReturn = any> = IteratorYieldResult<T> | IteratorReturnResult<TReturn>;interfaceIteratorYieldResult<TYield> { done?:false; value: TYield; }interfaceIteratorReturnResult<TReturn> { done:true; value: TReturn; }
ThoughTypeScript‘s ‘Interface’ is similar to ‘Type’ in defining properties, it leans more towards object orientation, primarily when creating contractual obligations. In essence, interfaces provide a way to define user-created complex types. They’re a powerful tool to specify contracts within ...
function createClock(ctor: ClockConstructor, hour: number, minute: number): ClockInterface {//这个和泛型中使用类类型相同, return new ctor(hour, minute);//需要类型为ClockInterface的两个参数的构造器类,只是二者写法有点区别 } class DigitalClock implements ClockInterface {//这边实现的接口不能是直接的...
interfaceCat{ name:string; run():void; }interfaceFish{ name:string; swim():void; }constanimal: Cat | Fish =newAnimal() animal.swim() animal 是一个联合类型,可能是猫 Cat,也可能是鱼 Fish,如果直接调用 swim 方法是要出现错误提示的,因为猫不会游泳。