Javascript Capitalize First Letter of Each Word

<!DOCTYPE html>
<html>
<head> </head>
<body>
    <div id="app">
        <h1>Javascript Capitalize first letter of each word in string</h1>
        <p>String : font awesome icons</p>
        <p id="output"></p>
        <button id="capitalizeButton">Capitalize String</button>
    </div>

return capitalizedString;
        }
        function handleButtonClick() {
            const sentence = "font awesome icons";
            const capitalizedSentence = capitalizeWords(sentence);
            const outputElement = document.getElementById("output");
            outputElement.textContent = capitalizedSentence;
        }

// Add event listener to the button
        const capitalizeButton = document.getElementById("capitalizeButton");
        capitalizeButton.addEventListener("click", handleButtonClick);
    </script>
</body>

</html>