Live Demo: JavaScript Convert a Number to String

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>JavaScript Convert a Number to String</title>
</head>
<body>
    <script>
    let num = 123;
    document.write(typeof num); // Prints: number
    document.write("<br>");
    
    let str = num.toString(); // Becomes a string "123"
    document.write(typeof str); // Prints: string
    </script>
</body>
</html>