vue15：记事本vue指令案例

news2024/9/21 0:34:47

效果图：

vue指令

代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>帅临记事本</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            background: #f4f4f4;
        }
        #app {
            max-width: 600px;
            margin: 50px auto;
            padding: 20px;
            background: #fff;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }
        header{
            text-align: center;
        }
        footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        h1 {
            margin: 0;
        }
        input {
            padding: 10px;
            margin-right: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        button {
            padding: 10px 20px;
            background: #007bff;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
        button:hover {
            background: #0056b3;
        }
        ul {
            list-style: none;
            padding: 0;
        }
        li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            padding: 10px;
            background: #eee;
            border-radius: 4px;
        }
        li span {
            font-weight: bold;
        }
        li button {
            background: #cfcccf;
            display: flex;
            justify-content: space-between;
            margin-right: 10px;

        }
        li button:hover {
            background: #cdcbcb;
        }
        footer {
            text-align: right;
        }
    </style>
</head>
<body>
    <div id="app">
        <header>
            <h1>帅临记事本</h1> <br>
            <input type="text" v-model="todoname" placeholder="输入任务">
            <button @click="add">添加</button>
        </header>
        
        <section>
            <ul>
                <li v-for="(item, index) in list" :key="item.id">
                    <div>
                        <span>{{ index + 1 }}:</span>
                        <label>{{ item.name }}</label>
                        <button @click="del(item.id)" >x</button>
                    </div>
                </li>
            </ul>
        </section>
        
        <footer v-if="list.length > 0">
            <div>
                <span>合计: {{ list.length }}</span>
                <button @click="clear">清空任务</button>
            </div>
        </footer>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>

    <script>
        new Vue({
            el: '#app',
            data: {
                todoname: '',
                list: [
                    { id: 1, name: '跑20分钟' },
                    { id: 2, name: '跳绳200次' },
                    { id: 3, name: '游泳1千米' }
                ]
            },
            methods: {
                del(id) {
                    this.list = this.list.filter(item => item.id !== id);
                },
                add() {
                    if (this.todoname.trim() === '') {
                        alert('输入不能为空');
                        return;
                    }
                    this.list.unshift({
                        id: +new Date(),
                        name: this.todoname
                    });
                    this.todoname = '';
                },
                clear() {
                    this.list = [];
                }
            }
        });
    </script>
</body>
</html>

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