index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>RANDOM HEX CODE CTRL V</title>
</head>
<body>
    <div class="card">
        <h2 class="Header">Random Color Generator</h2>
        <box style = "background-color:rgb(15, 0, 0)" class ="colorCard"></box>
        <p>Click inside the box to change color</p>
        
        <h1>Your HEX code</h1>
        
        <button class="button">Copy to clipboard</button>
    </div>
    <script type="text/javascript">
    var i = 0;
    var color = ([""]);
    var j = 0;
        for (j = j; j < color.length; j++) {
              document.querySelector("box").addEventListener("click", function () {
                let randomColor = [`#${Math.floor(Math.random() * 0x1000000).toString(16).padStart(6, "0")}`];
                console.log(randomColor);
                color.push([randomColor]);
                i = i < color.length ? ++i : 0;
                document.querySelector("box").style.background = color[i];

                let clipboard = document.querySelector("h1").textContent = `${[randomColor]}`;

                const copy = (text) => navigator.clipboard.writeText(text);  
                const button = document.querySelector("button");
                button.addEventListener("click", () => {
                    copy(clipboard)
                    console.log(copy(clipboard)); //whenever we call the copy function inside an Event, it will copy the text chosen to be shown
                });
    })
}
console.table(color);
    </script> 
</body> 
</html>