如何检测到Ctrl + R被按下? [英] How to detect that Ctrl+R was pressed?

问题描述

我正在用jquery编写一个函数，如果按下 Ctrl + R ，该函数将执行，但我似乎无法找出左右ctrl键码是什么...有人可以帮忙吗?

I'm coding a function in jquery that executes if Ctrl+R is pressed but I can't seem to find out what the left and right ctrl keycodes are... Can someone please help?

更新

    ///this works
    $(document).keydown(function(e){
      if(e.keyCode==17){alert("control was pressed")};
 });

下一个问题- 如何链接控制键和另一个键以执行功能?

Next Question-- How do I link control key press and another key press to execute a function?

  if(e.keyCode==17){llCtrlPress=1};
   if(e.keyCode==97 && llCtrlPress=1){DO SOMETHING}
  ????????????

似乎可以正常工作，但是如何在键盘输入中将llCtrlpress设置回'0'?

That seems like it would work fine but then how do I set llCtrlpress back to '0' on keyup?

推荐答案

您必须使用 keydown 函数来捕获 Ctrl 字符.这是我的 Ctrl + A 的实现:

You have to use the keydown function to trap Ctrl characters. Here is my implementation of Ctrl+A:

    $(document).keydown(function(e) {
        if (e.keyCode == 65 && e.ctrlKey) {
            alert('ctrl A');
        }
    });

Ctrl-R更加强大，因为在大多数浏览器中，即重新加载页面，这意味着javascript无法运行，页面会被刷新.

Ctrl-R is tougher because in most browsers, that is Reload Page, which means the javascript doesn't run, the page is refreshed.

也请注意，keydown/keyup功能中的 keyCode 值与keypress功能中的不同.

Just a note as well, the keyCode value are different in the keydown/keyupup functions than in the keypress functions.

编辑:删除了ctrl变量，忘记了ctrlKey

Removed ctrl variable, forgot about ctrlKey

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