在我的php页面上禁用重载和f5

Question

i am using a timer on my php page but when some refresh the page the timer start from begin. i want to disable f5 or reload option on my php page.

Thanks in advance

Answer 1

I test it and it works.

function disable_f5(e)
{
  if ((e.which || e.keyCode) == 116)
  {
      e.preventDefault();
  }
}

$(document).ready(function(){
    $(document).bind("keydown", disable_f5);    
});

Answer 2

It is impossible to disable such browser functionality. Would you like it if a page disabled your F5 key? I doubt it. If you are trying to implement some kind of security here, I suggest looking at proper server-side verification approaches.

Answer 3

Can't be done – that behaviour is controlled by the end user, and rightly so!

The nearest thing you can do is to display a warning when the window is closed or refreshed, which the user can either decide to heed your warning and stick with the current page, or ignore your request and close/refresh anyway.

See here: Alert when browser window closed accidentally