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49 lines
1.2 KiB
49 lines
1.2 KiB
2 years ago
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<template>
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<div class="todo-header">
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<input type="text" placeholder="请输入你的任务名称，按回车确认" v-model="title" @keyup.en.enter="add">
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</div>
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</template>
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<script>
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import {nanoid} from "nanoid"
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export default {
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name: "TodoHeader",
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// props: ['addTodo'], 改用自定义组件实现，不用再接收复组件传递的方法
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data() {
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// 初始化title已显示placeholder内容
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return {
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title: ''
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}
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},
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methods: {
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// 添加todo任务，trim用户输入数据后判断是否为空，如果内容正常则生成任务的对象数据
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// 将任务的对象数据回写到App中的todo中
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add() {
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if (!this.title.trim()) return alert("输入不能为空")
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const todoObj = {id: nanoid(), title: this.title, done: false}
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// this.addTodo(todoObj) // 改用emit触发自定义事件
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this.$emit('addTodo', todoObj)
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this.title = ''
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}
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}
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}
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</script>
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<style scoped>
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.todo-header input {
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width: 560px;
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height: 28px;
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font-size: 14px;
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border: 1px solid #ccc;
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border-radius: 4px;
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padding: 4px 7px;
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}
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.todo-header input:focus {
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outline: none;
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border-color: rgba(82, 168, 236, 0.8);
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box-shadow: inset 0 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
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}
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</style>
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