Controlling Browser Refresh: Disabling F5 with JavaScript

 In JavaScript, it is not possible to directly disable the refresh functionality triggered by the F5 key in a web browser. The functionality of the F5 key is handled by the browser itself, and JavaScript does not have control over it for security reasons.

However, you can detect the keypress event for the F5 key and prevent its default behavior, which effectively stops the refresh action. Here's an example of how you can achieve this:

document.addEventListener('keydown', function(event) {
  var key = event.key || event.keyCode;

  if (key === 'F5' || key === 'Refresh') {
    event.preventDefault();
    // Optionally, you can display a message or perform any other action here.
  }
});

This code adds an event listener to the keydown event of the document and checks if the pressed key is either "F5" or "Refresh". If it matches, the preventDefault() method is called on the event object to prevent the default behavior (refresh) from occurring. You can customize the action inside the if statement as per your requirement.

Note that it's important to consider the usability and user experience implications of disabling or altering the behavior of standard browser features. Modifying default browser behavior can be frustrating for users and may not be recommended in most cases.