(160条消息) Todo-List案例版本一_bubbleJessica的博客-CSDN博客
引入了localStorage,让案例更加完善文章来源:https://www.toymoban.com/news/detail-535092.html
src/App.vue文章来源地址https://www.toymoban.com/news/detail-535092.html
<template>
<div id="root">
<div class="todo-container">
<div class="todo-wrap">
<MyHeader :addToDo="addToDo" />
<MyList :todos="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo" />
<MyFooter :todos="todos" :checkAllTodo="checkAllTodo" :clearAllTodo="clearAllTodo" />
</div>
</div>
</div>
</template>
<script>
import MyHeader from './components/MyHeader'
import MyList from './components/MyList'
import MyFooter from './components/MyFooter'
export default {
name: 'App',
data() {
return {
// 由于todos是MyHeader组件和MyFooter组件都在使用,所以放在App中(状态提升)
todos: JSON.parse(localStorage.getItem('todos')) || []
}
},
components: { MyHeader, MyList, MyFooter },
methods: {
// 添加一个todo
addToDo(todoObj) {
this.todos.unshift(todoObj)
},
// 勾选or取消勾选一个todo
checkTodo(id) {
this.todos.forEach((todo) => {
if (todo.id === id) todo.done = !todo.done
})
},
// 删除一个todo
deleteTodo(id) {
// 注意:filter不改变原数组,只是新建一个数组
this.todos = this.todos.filter((todo) => {
return todo.id !== id
})
},
// 全选or取消全选
checkAllTodo(done) {
this.todos.forEach((todo) => {
todo.done = done
})
},
// 清除所有已完成的todo
clearAllTodo() {
this.todos = this.todos.filter((todo) => {
return !todo.done
})
}
},
watch: {
// todos简写不包含深度监视
// todos(value) {
// localStorage.setItem('todos', JSON.stringify(value))
// }
// todos完整版深度监视
todos:{
deep:true,
handler(value){
localStorage.setItem('todos', JSON.stringify(value))
}
}
}
}
</script>
<style>
/*base*/
body {
background: #fff;
}
.btn {
display: inline-block;
padding: 4px 12px;
margin-bottom: 0;
font-size: 14px;
line-height: 20px;
text-align: center;
vertical-align: middle;
cursor: pointer;
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
border-radius: 4px;
}
.btn-danger {
color: #fff;
background-color: #da4f49;
border: 1px solid #bd362f;
}
.btn-danger:hover {
color: #fff;
background-color: #bd362f;
}
.btn:focus {
outline: none;
}
.todo-container {
width: 600px;
margin: 0 auto;
}
.todo-container .todo-wrap {
padding: 10px;
border: 1px solid #ddd;
border-radius: 5px;
}
</style>
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