How to detect the screen resolution with JavaScript?

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To detect the screen resolution, use the concept of window.screen.

For width, use the following −

window.screen.availWidth

For height −

window.screen.availHeight

Following is the code to detect the screen resolution −

Example

Live Demo

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initialscale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
<script>
   console.log("Available Width="+window.screen.availWidth);
   console.log("Available Height="+window.screen.availHeight);
</script>
</body>
</html>

To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.