Vue Js check empty String and Space

<!DOCTYPE html>
<html>
<head>
    <script src="https://unpkg.com/vue@3.2.22/dist/vue.global.js"></script>
</head>
<body>
    <div id="app">
        <h3> Vue Js check empty String and Space</h3>
        <input type="text" v-model="myString" @input="checkString" />
        <p>{{output}}</p>
    </div>
    <script type="module">
        const app = Vue.createApp({
            data() {
                return {
                    myString: "",
                    output: ''
                };
            },
            methods: {
                checkString() {
                    if (!this.myString || /^\s*$/.test(this.myString)) {
                        this.output = "String is empty or contains only spaces!";
                    } else {
                        this.output = "String contains some content!";
                    }
                }
            }

})

app.mount('#app')
    </script>
    <style scoped>
        #app {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
        }

input[type="text"] {
            padding: 10px;
            font-size: 16px;
            border: 2px solid #ccc;
            border-radius: 5px;
            margin-bottom: 10px;
        }

p {
            font-size: 20px;
            color: #333;
        }
    </style>
</body>

</html>