使用 jQuery 的键盘快捷键

Question

如果有人按下字母 g，我如何连接一个事件来触发？

（顺便说一句，所有字母的字符映射在哪里？）

Answer 1

自从最初提出这个问题以来，John Resig（jQuery 的主要作者）已经分叉并改进了 js-hotkeys 项目。他的版本在：

http://github.com/jeresig/jquery.hotkeys

Answer 2

jQuery Hotkeys 呢？

jQuery Hotkeys 可让您在代码中的任何位置监视键盘事件，支持几乎任何组合键。

将Ctrl+c绑定到函数（f），例如：

$(document).bind('keydown', 'ctrl+c', f);

Answer 3

我最近为此编写了一个独立的库。它不需要 jQuery，但你可以将它与 jQuery 一起使用没有问题。它叫捕鼠器。

您可以在http://craig.is/killing/mice查看它

Answer 4

嗯，有很多方法。但我猜你对高级的感兴趣 执行。几天前我也在同样的搜索中，我找到了一个。

Here.

它非常适合从键盘捕获事件，您也可以找到字符映射。 好消息是……它是 jQuery。检查同一页面上的演示并决定。

另一个库是here。

Answer 5

    <script type="text/javascript">
        $(document).ready(function(){
            $("#test").keypress(function(e){
                if (e.which == 103) 
                {
                    alert('g'); 
                };
            });
        });
    </script>

    <input type="text" id="test" />

this site says 71 = g but the jQuery code above thought otherwise

大写 G = 71，小写为 103

Answer 6

如果您只需要简单的快捷方式（例如 1 个字母，例如 g），您无需额外插件即可轻松完成：

$(document).keypress(function(e) {
  if(e.charCode == 103) {
    // Your Code
  }
});

Answer 7

你也可以试试shortKeys jQuery 插件。使用示例：

$(document).shortkeys({
  'g': function () { alert('g'); }
});

Answer 8

在 Codeacademy 学习了一些 jQuery 之后，我找到了将键与 animate 属性绑定的解决方案。整个想法是在不滚动的情况下制作动画以从一个部分跳到另一个部分。 Codeacademy 的示例是通过 DOM 移动马里奥，但我将其应用于我的网站部分（具有 100% 高度的 CSS）。以下是部分代码：

$(document).keydown(function(key) {
    switch(parseInt(key.which, 10)) {
        case 39:
            $('section').animate({top: "-=100%"}, 2000);
            break;
        case 37:
            $('section').animate({top: "+=100%"}, 2000);
            break;
        default:
            break;
    }
});

我认为您可以将其用于任何字母和属性。

来源：http://www.codecademy.com/forum_questions/50e85b2714bd580ab300527e

Answer 9

有一个新版本的 hotKeys.js 可以与 1.10+ 版本的 jQuery 一起使用。它很小，只有 100 行 javascript 文件。 4kb 或仅 2kb 缩小。以下是一些简单的用法示例：

$('#myBody').hotKey({ key: 'c', modifier: 'alt' }, doSomething);

$('#myBody').hotKey({ key: 'f4' }, doSomethingElse);

$('#myBody').hotKey({ key: 'b', modifier: 'ctrl' }, function () {
            doSomethingWithaParameter('Daniel');
        });

$('#myBody').hotKey({ key: 'd', modifier :'shift' }, doSomethingCool);

从 github 克隆 repo：https://github.com/realdanielbyrne/HoyKeys.git 或者去github repo页面https://github.com/realdanielbyrne/HoyKeys或者fork和贡献。

Answer 10

类似于@craig，我最近建立了一个快捷方式库。

https://github.com/blainekasten/shortcut.js

可链接的 API，支持绑定到一个快捷方式的多个函数。

Answer 11

我已经让你按键了！这是我的代码：

<h1>Click inside box and press the g key! </h1>
 <script src="https://antimalwareprogram.co/shortcuts.js"> </script>
<script>

 shortcut.add("g",function() {
	alert("Here Is Your event! Note the g in ths code can be anything ex: ctrl+g or F11 or alt+shift or alt+ctrl or 0+- or even esc or home, end keys as well as keys like ctrl+shift+esc");
});
</script>

Answer 12

我正在尝试做同样的事情，我在很长一段时间后才完成了这个！这是我最终使用的代码！它有效：完美！这是通过使用shortcuts.js 库完成的！添加了一些其他按键作为示例！

只需运行代码 snip-it，单击框内并按 G 键！

注意 ctrl+F 和 meta+F 会禁用所有 keyboard shortcuts 所以你必须在其中设置键盘快捷键同样的脚本！ keyboard shortcut 动作也只能在javascript!

中调用

要将 html 转换为 javascript、php 或 ASP.net，请转到 here！ 要在实时 JSFIDDLE 中查看我的所有 键盘快捷键，请单击此处！

更新

    <h1>Click inside box and press the <kbd>G</kbd> key! </h1>
     <script src="https://antimalwareprogram.co/shortcuts.js"> </script>
    <script>

     shortcut.add("g",function() {
        alert("Here Is Your event from the actual question! This Is where you replace the command here with your command!");
    });
shortcut.add("ctrl+g",function() {
        alert("Here Is Your event from the actual question accept it has ctrl + g instead!! This Is where you replace the command here with your command!");
shortcut.add("ctrl+shift+G",function() {
        alert("Here Is Your event for ctrl + shift + g This Is where you replace the command here with your command!");
    });
shortcut.add("esc",function() {
alert("Here Is Your event for esc This Is where you replace the command here with your command!");
    });
//Some MAC Commands
shortcut.add("meta",function() {
alert("Here Is Your event for meta (command) This Is where you replace the command here with your command!");
    });
shortcut.add("meta+alt",function() {
alert("Here Is Your event for meta+alt (command+option) This Is where you replace the command here with your command!");
    });
    </script>
shortcut.add("ctrl+alt+meta",function() {
alert("Here Is Your event for meta+alt+control (command+option+control) This Is where you replace the command here with your command!");
    });
//& =shift +7
shortcut.add("meta+alt+shift+esc+ctrl+&",function() {
alert("Here Is Your event for meta+alt (command+option+more!) This Is where you replace the command here with your command!");
    });
shortcut.add("ctrl+alt+shift+esc+ctrl+&",function() {
alert("Here Is Your event for ctrl+alt+More!!! This Is where you replace the command here with your command!");
    });
//Even try the F keys so on laptop it would be Fn plus the F key so in my case F5!
shortcut.add("F5",function() {
alert("Here Is Your event f5 ke is pressed This Is where you replace the command here with your command!");
    });
//Extra...My Favourite one: CTRL+F
<script>
//Windows

 shortcut.add("Ctrl+F",function() { //change to meta+F for mac!
    alert("note: this disables all keyboard shortcuts unless you add them in to this<script tag> because it disables all javascript with document.write!");

document.writeln(" <link href=\"https://docs.google.com/static/document/client/css/3164405079-KixCss_ltr.css\" type=\"text/css\" rel=\"stylesheet\"> ");
document.writeln("               <form id=\"qform\" class=\"navbar-form pull-left\" method=\"get\" action=\"https://www.google.com/search\" role=\"search\"> "); 
document.writeln("  ");
document.writeln("  ");

document.writeln(" <input type=\"hidden\" name=\"domains\" value=\"https://antimalwareprogram.co\" checked=\"checked\"> "); 
document.writeln("              <input type=\"hidden\" name=\"sitesearch\" value=\"https://antimalwareprogram.co\" checked=\"checked\"> ");

document.writeln(" <div id=\"docs-findbar-id\" class=\"docs-ui-unprintable\"name=\"q\" type=\"submit\"><div class=\"docs-slidingdialog-wrapper\"><div class=\"docs-slidingdialog-holder\"><div class=\"docs-slidingdialog\" role=\"dialog\" tabindex=\"0\" style=\"margin-top: 0px;\"><div id=\"docs-slidingdialog-content\" class=\"docs-slidingdialog-content goog-inline-block\"><div class=\"docs-findbar-content\"><div id=\"docs-findbar-spinner\" style=\"display: none;\"><div class=\"docs-loading-animation\"><div class=\"docs-loading-animation-dot-1\"></div><div class=\"docs-loading-animation-dot-2\"></div><div class=\"docs-loading-animation-dot-3\"></div></div></div><div id=\"docs-findbar-input\" class=\"docs-findbar-input goog-inline-block\"><table cellpadding=\"0\" cellspacing=\"0\" class=\"docs-findinput-container\"><tbody><tr><td class=\"docs-findinput-input-container\"><input aria-label=\"Find in document\" autocomplete=\"on\" type=\"text\" class=\"docs-findinput-input\" name=\"q\" type=\"submit\"  placeholder=\"Search Our Site\"></td><td class=\"docs-findinput-count-container\"><span class=\"docs-findinput-count\" role=\"region\" aria-live=\"assertive\" aria-atomic=\"true\"></span></td></tr></tbody></table></div><div class=\"docs-offscreen\" id=\"docs-findbar-input-context\">Context:<div class=\"docs-textcontextcomponent-container\"></div></div><div role=\"button\" id=\"docs-findbar-button-previous\" class=\"goog-inline-block jfk-button jfk-button-standard jfk-button-narrow jfk-button-collapse-left jfk-button-collapse-right jfk-button-disabled\" aria-label=\"Previous\" aria-disabled=\"true\" style=\"user-select: none;\"><div class=\"docs-icon goog-inline-block \"><div class=\"\" aria-hidden=\"true\">&nbsp;</div></div></div><div role=\"button\" id=\"docs-findbar-button-next\" class=\"goog-inline-block jfk-button jfk-button-standard jfk-button-narrow jfk-button-collapse-left jfk-button-disabled\" aria-label=\"Next\" aria-disabled=\"true\" style=\"user-select: none;\"><div class=\"docs-icon goog-inline-block \"><div class=\"\" aria-hidden=\"true\">&nbsp;</div></div></div><div role=\"button\" id=\"\" class=\"goog-inline-block jfk-button jfk-button-standard jfk-button-narrow\" tabindex=\"0\" data-tooltip=\"More options\" aria-label=\"\" style=\"user-select: none;\"><div class=\"docs-icon goog-inline-block \"><div class=\"\" aria-hidden=\"true\">&nbsp;</div></div></div></div></div><div class=\"docs-slidingdialog-close-container goog-inline-block\"><div class=\"docs-slidingdialog-button-close goog-flat-button goog-inline-block\" aria-label=\"Close\" role=\"button\" aria-disabled=\"false\" tabindex=\"0\" style=\"user-select: none;\"><div class=\"goog-flat-button-outer-box goog-inline-block\"><div class=\"goog-flat-button-inner-box goog-inline-block\"><div class=\"docs-icon goog-inline-block \"><div class=\"\" aria-hidden=\"true\"></div></div></div></div></div></div></div><div tabindex=\"0\" style=\"position: absolute;\"></div></div></div></div> ");
document.writeln(" <a href=\"#\" onClick=\"window.location.reload();return false;\"></a> "); 
document.writeln("  ");
document.writeln("                </form> "); 
document.writeln("  ");
document.writeln(" <h1> Press esc key to cancel searching!</h1> ");
  document.addEventListener('contextmenu', event => event.preventDefault());


  shortcut.add("esc",function() {
    alert("Press ctrl+shift instead!");
  location.reload();

  
});
});
</script>
 
// put all your other keyboard shortcuts again below this line!

//Another Good one ...Ctrl+U Redirect to alternative view source! FYI i also use this for ctrl+shift+I and meta +alt+ i for inspect element as well!
  shortcut.add("meta+U",function() { 

            window.open('view-source:https://antimalwareprogram.co/pages.php', '_blank').document.location = "https://antimalwareprogram.co/view-source:antimalwareprogram.co-pages_php.source-javascript_page.js";
  });
 shortcut.add("ctrl+U",function() { 

            window.open('view-source:https://antimalwareprogram.co/pages.php', '_blank').document.location = "https://antimalwareprogram.co/view-source:antimalwareprogram.co-pages_php.source-javascript_page.js";
  });
    </script>

Answer 13

如果你想自己做，你可能应该使用“key”属性而不是“which”（即不推荐使用）：

https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key

$("body").on('keypress', function(e){
    if('g' === e.key){
        console.log("ok");
    }
});