What are the advantages and disadvantages of using inline JavaScript versus external JavaScript files for date field manipulation in PHP?

When manipulating date fields in PHP, using external JavaScript files for date manipulation offers better organization and reusability of code. However, inline JavaScript can provide a quicker solution for simple date field manipulations. The disadvantage of using inline JavaScript is that it can clutter the HTML code and make it harder to maintain. 

<!DOCTYPE html>
<html>
<head>
    <title>Date Field Manipulation</title>
    <script src="external.js"></script>
</head>
<body>
    <input type="text" id="dateField">
    
    <script>
        // Inline JavaScript for date field manipulation
        document.getElementById('dateField').addEventListener('change', function() {
            // Date manipulation logic here
            console.log('Date field changed');
        });
    </script>
</body>
</html>

Keywords

inline JavaScript external JavaScript files date field manipulation advantages disadvantages

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