Vue Js count occurrences of a specific word in a string

<!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 Count occurrences of a specific substring in Text</h3>
        <p class="message">{{ message }}</p>
        <p class="target-word">The word "<span class="target-word">{{ targetWord }}</span>" appears {{
            countOccurrences(message, targetWord) }} times.</p>
    </div>
    <script type="module">
        const app = Vue.createApp({
            data() {
                return {
                    message: 'This is an example message that contains the word example multiple times.',
                    targetWord: 'example'
                }
            },
            methods: {
                countOccurrences(str, word) {
                    const lowercaseStr = str.toLowerCase();
                    const lowercaseWord = word.toLowerCase();
                    return lowercaseStr.split(lowercaseWord).length - 1;
                }
            }
        });

app.mount('#app');
    </script>
    <style scoped>
        /* Style the app container */
        #app {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-family: Arial, sans-serif;
            background-color: #f9f9f9;
            padding: 20px;
            border: 1px solid #ccc;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

/* Style the heading */
        h3 {
            font-size: 28px;
            color: #333;
            margin-bottom: 20px;
        }

/* Style the message paragraph */
        p.message {
            font-size: 20px;
            color: #666;
            line-height: 1.5;
            margin-bottom: 20px;
            text-align: center;
            max-width: 80%;
        }

/* Style the target word paragraph */
        p.target-word {
            font-size: 20px;
            color: #333;
            line-height: 1.5;
            text-align: center;
        }

/* Style the target word */
        .target-word {
            color: #007bff;
            font-weight: bold;
        }
    </style>
</body>

</html>