OnKeyUp
- 网络击键
OnKeyUp-
OnKeyUp () and validate () are the functions that define the logic of the widget
onKeyUp（）和validate（）是两个函数，定义了小部件的逻辑
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In DHTML , there are two possible events you can use to do this : onkeyup () and onmouseup () .
在DHTML中，有两种可能事件您能用于检测变更：onkeyup（）和onmouseup（）。
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The onkeydown , onkeyup , and onkeypress events are fired when a key is pressed or released .
onkeyup和onkeypress事件在按下或释放某个键时触发。