React Check if String is Empty

<!DOCTYPE html>
<html>
<head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js"></script>
</head>
<body>
    <div id="app">
        <h3>Vue Js Check string is Empty or not</h3>
        <input v-model="inputValue" type="text" placeholder="Enter a value" />
        <button @click="checkString">Check String</button>
        <p>{{ result }}</p>
    </div>
    <script type="module">
        const app = new Vue({
            el: "#app",
            data() {
                return {
                    inputValue: "",
                    result: "",
                };
            },
            methods: {
                checkString() {
                    const str = this.inputValue;

if (str && str.trim() !== "") {
                        this.result = "Input Field is Not Empty";
                    } else {
                        this.result = "Input Field is  Empty";
                    }
                },
            },
        });
    </script>

h3 {
            color: #333;
            margin-bottom: 20px;
        }

input[type="text"] {
            width: 100%;
            padding: 10px;
            font-size: 16px;
            border: 1px solid #ccc;
            border-radius: 4px;
            outline: none;
            box-sizing: border-box;
            margin-bottom: 1rem;
        }

button {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #4caf50;
            color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }

button:hover {
            background-color: #45a049;
        }

p {
            margin-top: 20px;
            font-size: 18px;
        }
    </style>
</body>
</html>

 
<!DOCTYPE html>
<html>
<head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js"></script>
</head>
<body>
    <div id="app">
        <h3>Vue Js Check string is Empty or not</h3>
        <input v-model="inputValue" type="text" placeholder="Enter a value" />
        <button @click="checkString">Check String</button>
        <p>{{ result }}</p>
    </div>
    <script type="module">
        const app = new Vue({
            el: "#app",
            data() {
                return {
                    inputValue: "",
                    result: "",
                };
            },
            methods: {
                checkString() {
                    const str = this.inputValue;
​
                    if (str && str.trim() !== "") {
                        this.result = "Input Field is Not Empty";
                    } else {
                        this.result = "Input Field is  Empty";
                    }
                },
            },
        });
    </script>
​
    <style>
        #app {
            text-align: center;
            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12),
                0 2px 4px 0 rgba(0, 0, 0, 0.24);
            width: 600px;
            margin: 0 auto;
            padding: 20px;
        }
​
        h3 {
            color: #333;
            margin-bottom: 20px;
        }
​
        input[type="text"] {
            width: 100%;
            padding: 10px;
            font-size: 16px;
            border: 1px solid #ccc;
            border-radius: 4px;
            outline: none;
            box-sizing: border-box;
            margin-bottom: 1rem;
        }
​
        button {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #4caf50;
            color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
​
        button:hover {
            background-color: #45a049;
        }
​
        p {
            margin-top: 20px;
            font-size: 18px;
        }
    </style>
</body>
</html>