请问，在html事件中，OnDataAvailable 表示什么？
A.设定取得资料时出发的事件执行
B.设定改变资料时出发的事件执行
C.设定放置资料完成时出发的事件执行

应该是哪一个？


html的说明我看不懂.

ondataavailable

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Description

Fires periodically as data arrives for data source objects that transmit their data asynchronously. Frequency of firing is dependent upon the data source object.

Remarks

This event fires for objects and applications that are data source objects. There is a qualifier property on the event object; the qualifier will always be set to "" for Internet Explorer 4.0. This event cannot be canceled. This event will bubble. Events that bubble can be handled on any parent element of the object that fired the event.

Applies To

APPLET, IMG, MAP, OBJECT

thk