创建源 event objects are created by Communicator when an event occurs. You do not create them yourself. 安全性 Setting any property of this object requires the UniversalBrowserWrite privilege. In addition, getting the data property of the DragDrop event requires the UniversalBrowserRead privilege. 要获取 Navigator 4.0 中关于安全性更多的信息,请看“JavaScript 指南”中的第七章“JavaScript 安全性”。
属性概览 Not all of these properties are relevant to each event type. To learn which properties are used by an event, see the "Event object properties used" section of the individual event handler.
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