我只是把其他答案中最好的部分结合起来:

$(document).keydown(function(e){
    switch(e.which) {
        case $.ui.keyCode.LEFT:
        // your code here
        break;

        case $.ui.keyCode.UP:
        // your code here
        break;

        case $.ui.keyCode.RIGHT:
        // your code here
        break;

        case $.ui.keyCode.DOWN:
        // your code here
        break;

        default: return; // allow other keys to be handled
    }

    // prevent default action (eg. page moving up/down)
    // but consider accessibility (eg. user may want to use keys to choose a radio button)
    e.preventDefault();
});

我只是把其他答案中最好的部分结合起来:

$(document).keydown(function(e){
    switch(e.which) {
        case $.ui.keyCode.LEFT:
        // your code here
        break;

        case $.ui.keyCode.UP:
        // your code here
        break;

        case $.ui.keyCode.RIGHT:
        // your code here
        break;

        case $.ui.keyCode.DOWN:
        // your code here
        break;

        default: return; // allow other keys to be handled
    }

    // prevent default action (eg. page moving up/down)
    // but consider accessibility (eg. user may want to use keys to choose a radio button)
    e.preventDefault();
});

你确定jQuery。热键不支持方向键?我之前摆弄过他们的演示，当我在IE7、Firefox 3.5.2和谷歌Chrome 2.0.172中测试它时，观察到左右上下工作正常……

编辑:它出现jquery。热键已重新定位到Github: https://github.com/jeresig/jquery.hotkeys

咖啡和Jquery

  $(document).on 'keydown', (e) ->
    switch e.which
      when 37 then console.log('left key')
      when 38 then console.log('up key')
      when 39 then console.log('right key')
      when 40 then console.log('down key')
    e.preventDefault()

$(document).keydown(function(e){
    if (e.which == 37) { 
       alert("left pressed");
       return false;
    }
});

字符编码:

37 -左 38岁以上 39 -对 40 -下降

一个健壮的Javascript库，用于捕获键盘输入和输入的组合键。它没有依赖关系。

http://jaywcjlove.github.io/hotkeys/

hotkeys('right,left,up,down', function(e, handler){
    switch(handler.key){
        case "right":console.log('right');break
        case "left":console.log('left');break
        case "up":console.log('up');break
        case "down":console.log('down');break
    }
});