vue3中如何使用ts

如何使用ts

在创建vue脚手架的时候吧typescript选上

app.vue

<template>
 <!-- <div id="nav">
  <router-link to="/">Home</router-link> |
  <router-link to="/about">About</router-link>
 </div>
 <router-view/> -->
 <div id="root">
  <div className="todo-container">
   <div className="todo-wrap">
    <Header :addtodo="addtodo"/>
    <List :todos="state.todos" />
    <Footer />
   </div>
  </div>
 </div>
</template>

<script lang="ts">
import { defineComponent, reactive } from "vue";
import Footer from "./components/footer/footer.vue";
import Header from "./components/header/header.vue";
import List from "./components/list/list.vue";
//导入接口类型
import {todo} from "./type/todo"
export default defineComponent({
 components: { List, Header, Footer },
 setup() {
  const state = reactive({
   todos: [
    { id: 1, title: "吃饭", isture: true },
    { id: 2, title: "睡觉", isture: false },
    { id: 3, title: "打游戏", isture: false },
    { id: 4, title: "打代码", isture: true },
   ],
  });
  //定义一个方法用来接收输入框里面传来的数据并把它加到state.todos里面面
  const addtodo=(todo:todo)=>{
   state.todos.unshift(todo)
  }
  return {
   state,
   addtodo
  };
 },
});
</script>

<style>
@import "./App.css";
</style>

header.vue

<template>
 <div class="todo-header">
  <input
   type="text"
   placeholder="请输入你的任务名称，按回车键确认"
   v-model="title"
   @keyup.enter="add"
  />
 </div>
</template>

<style scoped>
@import "./header.css";
</style>

<script lang="ts">
import { defineComponent, ref } from "vue";
//导入接口类型
import { todo } from "../../type/todo";
export default defineComponent({
 props: {
  addtodo: {
   type: Function,
   required: true,
  },
 },
 setup(props) {
  const title = ref("");
  const add = () => {
   if (title.value == "") {
    alert("请输入内容");
   }
   const todo: todo = {
    id: Date.now(),
    title: title.value,
    isture: false,
   };
   props.addtodo(todo);
   title.value=''
  };
  return {
   add,
   title,
  };
 },
});
</script>

list.vue

<template>
  <ul className="todo-main">
    <Listitem v-for="(todos,index) in todos" :key="todos.id" :todos='todos'></Listitem>
  </ul>
</template>

<style scoped>
@import"./list.css";
</style>

<script lang="ts">
import Listitem from "./listitem/listitem.vue"
import { defineComponent } from 'vue'
export default defineComponent({
  components:{
    Listitem
  },
  props:{
    todos:Object
  }
  ,
  setup() {
   
  },
})
</script>

listitem.vue

<template>

  <li class="itli" >
   <label>
    <input type="checkbox" v-model="todos.isture" />
    <span>{{todos.title}}</span>
   </label>
   <button
    class="btn btn-danger"
      >删除</button>
  </li>

</template>

<style scoped>
@import "./listitem.css";
</style>

<script lang="ts">
import { defineComponent } from "vue";
//导入接口类型
import {todo} from "../../../type/todo"
export default defineComponent({
 setup() {},
 props:{
//定义todos的类型是自己定义的todo接口
  todos:Object as ()=>todo
 }
});
</script>

footer.vue

<template>
  <div class="todo-footer">
    <label>
     <input type="checkbox"   />
    </label>
    <span >
     <span >已完 </span> / 全部
    </span>
    <button class="btn btn-danger" >清除已完成任务</button>
   </div>
</template>

<style scoped>
/* @import"./footer.css"; */
</style>

<script lang="ts">
import { defineComponent } from 'vue'
export default defineComponent({
  setup() {
   
  },
})
</script>

以上为个人经验，希望能给大家一个参考，也希望大家多多支持源码搜藏网。