11 replies

Keep getting error "Uncaught TypeError: Cannot read properties of null (reading 'classList')"

I'm making a js-actuated modal but I keep getting the error "Uncaught TypeError: Cannot read properties of null (reading 'classList')". This is my code:

<!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">
    <script src="script.js"></script>
    <title>Custom Modal</title>
</head>
<body>
    <button onclick="openModal()">Open Modal</button>
    <p class="modal-content hidden">This is a modal</p>
<script>
const modalcontent = document.querySelector(".modal-content");

function openModal() {
    modalcontent.classList.replace("hidden", "visible");
}
</script>
</body>
</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">
    <script src="script.js"></script>
    <title>Custom Modal</title>
</head>
<body>
    <button onclick="openModal()">Open Modal</button>
    <p class="modal-content hidden">This is a modal</p>
<script>
const modalcontent = document.querySelector(".modal-content");

function openModal() {
    modalcontent.classList.replace("hidden", "visible");
}
</script>
</body>
</html>

How can I fix this? Thanks

KP-C

Kevin Powell - Community•4y ago•

11 replies

Lord Of Insanity

Keep getting error "Uncaught TypeError: Cannot read properties of null (reading 'classList')"

I'm making a js-actuated modal but I keep getting the error "Uncaught TypeError: Cannot read properties of null (reading 'classList')". This is my code:

<!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">
    <script src="script.js"></script>
    <title>Custom Modal</title>
</head>
<body>
    <button onclick="openModal()">Open Modal</button>
    <p class="modal-content hidden">This is a modal</p>
<script>
const modalcontent = document.querySelector(".modal-content");

function openModal() {
    modalcontent.classList.replace("hidden", "visible");
}
</script>
</body>
</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">
    <script src="script.js"></script>
    <title>Custom Modal</title>
</head>
<body>
    <button onclick="openModal()">Open Modal</button>
    <p class="modal-content hidden">This is a modal</p>
<script>
const modalcontent = document.querySelector(".modal-content");

function openModal() {
    modalcontent.classList.replace("hidden", "visible");
}
</script>
</body>
</html>

How can I fix this? Thanks

Keep getting error "Uncaught TypeError: Cannot read properties of null (reading 'classList')"

Similar Threads

Keep getting error "Uncaught TypeError: Cannot read properties of null (reading 'classList')"

Similar Threads

Similar Threads

Similar Threads