keydownHandler
时间: 2023-08-23 17:11:32 浏览: 154
keydownHandler是一个方法,用于处理键盘事件。在给定的代码中,keydownHandler方法被用于处理所有键盘事件,并根据需要调度相应的动作。它通过使用_keyCodeProcess方法从事件中提取出事件类型,并将其传递给存储在callback查找表中的回调函数。具体来说,它使用strCommand来构建回调函数的键名,并通过调用this.callback\['on' + strCommand\](objEvent)来触发相应的回调函数。最后,keydownHandler方法返回null。\[1\]
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