KeyDown
- 网络按下;按下事件;键盘按下事件;键盘事件
KeyDown-
One controls the amount of time that has elapsed since the last user keydown event
一种是控制从最后一个用户的键盘按下事件后所过去的总时间
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Keydown () - Called whenever a page element has a keypress done on it / in it
keydown（）-当页面元素在其上/内发生一个keypress时调用
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On the Client side , the script ( written in the JavaScript programming language ) registers that a string has been entered in the input field ( a keydown event has occurred ) .
在客户端，脚本（JavaScript编程语言）显示了已在输入栏中输入字符（发生了keydown事件）。