捕获Alt + F + P jquery

Question

以下是我如何在jQuery中捕获CTRL+C

$(window).bind('keydown', function (event) {
        if (event.ctrlKey || event.metaKey) {
            switch (String.fromCharCode(event.which).toLowerCase()) {
                case 'p':
                    event.preventDefault();
                    printFunc();
                    break;             
            }
        }
    });

我如何为ALT+F+P

执行相同的操作

$(window).bind('keydown', function (event) {
          if (event.altKey || event.metaKey) {
            switch (String.fromCharCode(event.which).toLowerCase()) {
                case 'f': 
                    event.preventDefault();
//************ Need help for identifying p  **************
                  //  alert('Alt-f');
                   printFunc();
                    break;            
            }
        }
    });

我也试过这个但没有运气：

if (event.altKey && event.which == 70 && event.which == 80) {
       alert('Alt-f-p');
    }

Answer 1

这有效，但只有在“f”之前执行“p”时才有效。至少在Chrome中，Alt + F会激活浏览器功能。的 Live demo (click).

var pressed = {};
$(document).keydown(function(event) {
  //event.altKey 70 80
  var k = event.keyCode;
  if (event.altKey && (k == 70 || k == 80)) {
    pressed[k] = true;
    console.log(k);
  }
  if (pressed[70] && pressed[80]) {
    console.log('all pressed!');
  }
});

$(document).keyup(function() {
  pressed = {};
});

也许你会想让它适应不使用冲突的东西？