The error message "a3.fc(...)[aMJ(...)] is not a function" typically occurs when there is an issue with the implementation of the full-screen functionality in the video player. This error often happens when the code is trying to call a function that doesn't exist or is not supported by the browser.

To implement a full-screen video player in a mobile browser, you should use the standard HTML5 <video> element and handle the full-screen functionality through JavaScript. Here's a step-by-step guide on how to achieve this:

  1. HTML: Create an HTML5 <video> element in your HTML file with the video source and any other necessary attributes.
<!DOCTYPE html> <html> <head> <title>Full-Screen Video Player</title> </head> <body> <video id="videoPlayer" controls> <source src="path/to/your/video.mp4" type="video/mp4"> Your browser does not support the video tag. </video> <script src="path/to/your/script.js"></script> </body> </html>
  1. JavaScript: In your JavaScript file (script.js in this example), handle the full-screen functionality using the <video> element's requestFullscreen() method for entering full-screen mode and exitFullscreen() method for exiting full-screen mode.
const videoPlayer = document.getElementById('videoPlayer'); function toggleFullScreen() { if (!document.fullscreenElement) { // Enter full-screen mode if (videoPlayer.requestFullscreen) { videoPlayer.requestFullscreen(); } else if (videoPlayer.mozRequestFullScreen) { videoPlayer.mozRequestFullScreen(); } else if (videoPlayer.webkitRequestFullscreen) { videoPlayer.webkitRequestFullscreen(); } else if (videoPlayer.msRequestFullscreen) { videoPlayer.msRequestFullscreen(); } } else { // Exit full-screen mode if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } } } videoPlayer.addEventListener('click', toggleFullScreen);

In this example, the toggleFullScreen() function is used to toggle full-screen mode when the user clicks on the video player. It checks if the document.fullscreenElement property is set to determine if the video is currently in full-screen mode or not. Depending on the browser, it uses the appropriate full-screen method for entering or exiting full-screen mode.

By following this approach, you can implement a full-screen video player that should work correctly in mobile browsers. However, keep in mind that browser support for full-screen functionality may vary, so it's essential to test the implementation in various browsers and devices to ensure compatibility.

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