nsIDOMHTMLTimeRanges 编辑

The nsIDOMHTMLTimeRanges interface represents a set of time ranges in media; it's primarily used by the nsIDOMHTMLMediaElement interface, and implements the DOM TimeRanges interface.

Each time range represented by an nsIDOMHTMLTimeRanges object has an index number; you call the start() and end() methods to obtain the start and end times of each range, specifying the index number of the range to look up.

Inherits from: nsISupports

Method overview

Attributes

Methods

end()

Returns the time offset to the end of the specified time range.

float end(
  in unsigned long index
);

Parameters

index

The index to the time range whose end time is to be returned.

Return value

The time at which the specified range ends, in seconds measured from the beginning of the timeline represented by the object.

Exceptions thrown

INDEX_SIZE_ERR

The specified index is not valid.

start()

Returns the time offset to the start of the specified time range.

float start(
  in unsigned long index
);

Parameters

index

The index to the time range whose start time is to be returned.

Return value

The time at which the specified range starts, in seconds measured from the beginning of the timeline represented by the object.

Exceptions thrown

INDEX_SIZE_ERR

The specified index is not valid.

See also

• nsIDOMHTMLMediaElement
• TimeRanges
• <video>
• <audio>