How to Check If Element is Hidden in Javascript | Collection of Helpful Guides & Tutorials!

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    
    <div>
        <button>Check</button>
        <h1>Result</h1>
        <span>SPAN</span>
    </div>
    <script src="script.js"></script>
</body>
</html>

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<!DOCTYPE html>

<head>

<title>Document</title>

</head>

<body>

<div>

<button>Check</button>

<h1>Result</h1>

</div>

</body>

</html>

div {
    display: flex;
    align-items: center;
    flex-direction: column;
}

span {
    display: block;
    padding: 10px;
    border: 1px solid black;
    text-align: center;
    width: 25%;
}

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div {

display: flex;

align-items: center;

flex-direction: column;

}

span {

display: block;

padding: 10px;

border: 1px solid black;

text-align: center;

width: 25%;

}

let btnCheck = document.querySelector('button');
let span = document.querySelector('span');
let result = document.querySelector('h1');

btnCheck.addEventListener('click', () => {
    let spanStyle = window.getComputedStyle(span);

    result.innerText = spanStyle.display == 'none' || spanStyle.visibility == 'hidden' ? 'Hidden' : 'Visible';
});

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let btnCheck = document.querySelector('button');

let span = document.querySelector('span');

let result = document.querySelector('h1');