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Figuren

返回值:jQuerykeydown([[data],fn])

概述

当键盘或按钮被按下时,发生 keydown 事件。

注释:如果在文档元素上进行设置,则无论元素是否获得焦点,该事件都会发生。

参数

fnFunctionV1.0

在每一个匹配元素的keydown事件中绑定的处理函数。

[data],fnString,FunctionV1.4.3

data:keydown([Data], fn) 可传入data供函数fn处理。

fn:在每一个匹配元素的keydown事件中绑定的处理函数。

示例

描述:

在页面内对键盘按键做出回应,可以使用如下代码:

jQuery 代码:
$(window).keydown(function(event){
  switch(event.keyCode) {
    // ...
    // 不同的按键可以做不同的事情
    // 不同的浏览器的keycode不同
    // 更多详细信息:     http://unixpapa.com/js/key.html
    // ...
  }
});
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