Vue中TodoList案例

Vue中TodoList案例_勾选

与上一篇Vue中TodoList案例_添加有三个文件变化了

App.vue：中加了checkTodo方法

<template><div id="root"><div class="todo-container"><div class="todo-wrap"><MyHeader :addTodo="addTodo"/><MyList :todos="todos" :checkTodo="checkTodo"/><MyFooter/></div></div></div></template><script>
import MyHeader from './components/MyHeader'
import MyList from './components/MyList'
import MyFooter from './components/MyFooter'export default {name:'App',components:{MyHeader,MyList,MyFooter},data(){return{todos:[{id:'001',title:'唱',done:true},{id:'002',title:'跳',done:false},{id:'003',title:'rap',done:true},{id:'004',title:'篮球',done:true}]}},methods:{//添加一个todoaddTodo(todoObj){this.todos.unshift(todoObj)},//勾选or取消勾选一个todocheckTodo(id){this.todos.forEach((todo)=>{if (todo.id===id)todo.done=!todo.done})}}
}
</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>

MyList.vue：中拿到checkTodo，再传给MyItem

<template><ul class="todo-main"><MyItem v-for="todoObj in todos" :key="todoObj.id" :todo="todoObj" :checkTodo="checkTodo"/></ul>
</template><script>
import MyItem from "./MyItem";
export default {name: "MyList",components:{MyItem},props:['todos','checkTodo']
}
</script><style scoped>
.todo-main{margin-left: 0px;border: 1px solid #ddd;border-radius: 2px;padding: 0px;
}.todo-empty{height: 40px;line-height: 40px;border: 1px solid #ddd;border-radius: 2px;padding-left:5px;margin-top: 10px;
}
</style>

MyItem.vue：定义change改变时候触发方法将id传给App.vue

<template><div><li><label ><input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)"/> <!--给input指定一个checked选项，如果是true就勾选上，如果是false就不勾选--><span>{{todo.title}}</span></label><button class="btn btn-danger" style="display:none">删除</button></li></div>
</template><script>
export default {name: "MyItem",//声明接收对象props:['todo','checkTodo'],methods:{handleCheck(id){//通知App组件将对应的todo对象的done值取反this.checkTodo(id)}}
}
</script><style scoped>
li{list-style: none;height: 36px;line-height: 36px;padding: 0 5px;border-bottom: 1px solid #ddd;
}
li label{float:left;cursor: pointer;
}li label li input{vertical-align: middle;margin-right: 6px;position: relative;top: -1px;
}li button{float: right;display: none;margin-top: 3px;
}li:before{content: initial;
}
li:last-child{border-bottom: none;
}
</style>