how to create a pop up in middle screen javascript
<!DOCTYPE html> <html> <head> <title> Centered popup window on the screen </title> </head> <body> <h1>GeeksforGeeks</h1> <p> Centered popup window on the screen </p> <script> function createPopupWin(pageURL, pageTitle, popupWinWidth, popupWinHeight) { var left = (screen.width - popupWinWidth) / 2; var top = (screen.height - popupWinHeight) / 4; var myWindow = window.open(pageURL, pageTitle, 'resizable=yes, width=' + popupWinWidth + ', height=' + popupWinHeight + ', top=' + top + ', left=' + left); } </script> <button onclick = "createPopupWin('https://www.geeksforgeeks.org', 'GeeksforGeeks Website', 1200, 650);"> GeeksforGeeks </button> </body> </html>
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