Vue Js Check if Input is Empty

<html>
<head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">
        <h3>Vue Js Check if Input is Empty</h3>
        <label for="myInput">Enter something:</label>
        <input type="text" id="myInput" v-model="inputValue">
        <button @click="submitForm">Submit</button>
    </div>
    <script type="module">
        const app = new Vue({
            el: "#app",
            data() {
                return {
                    inputValue: '',
                };
            },
            methods: {
                submitForm() {
                    if (!this.inputValue) {
                        alert('Input field is empty!');
                        return;
                    }
                    // Do something with the input value
                    console.log(this.inputValue);
                },
            },
        });

</script>
    <style scoped>
        #app {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

label {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

input[type="text"] {
            padding: 0.5rem;
            border-radius: 4px;
            border: 1px solid #ccc;
            font-size: 1rem;
            width: 100%;
            max-width: 400px;
        }

button {
            background-color: #007bff;
            color: #fff;
            border-radius: 4px;
            border: none;
            padding: 0.5rem 1rem;
            font-size: 1rem;
            cursor: pointer;
            margin-top: 1rem;
        }

button:hover {
            background-color: #0069d9;
        }
    </style>
</body>

</html>