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jQuery keypress() 方法

❮ jQuery 事件方法

示例

统计 <input> 字段中的按键次数

$("input").keypress(function(){
  $("span").text(i += 1);
});
亲自试一试 »

定义和用法

与 keypress 事件相关的事件顺序

  1. keydown - 键按下
  2. keypress - 键被按下
  3. keyup - 键释放

keypress() 方法触发 keypress 事件,或者附加一个函数在 keypress 事件发生时运行。

keypress 事件类似于 keydown 事件。当按下按钮时,该事件发生。

但是,keypress 事件并非对所有键都触发(例如 ALT、CTRL、SHIFT、ESC)。使用 keydown() 方法还可以检查这些键。


语法

为选定的元素触发 keypress 事件

$(选择器).keypress() 试一试

将函数附加到 keypress 事件

$(选择器).keypress(函数) 试一试

参数 描述
function 可选。指定在触发 keypress 事件时运行的函数

❮ jQuery 事件方法

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