この記事はまだボランティアによって 日本語 に翻訳されていません。ぜひ MDN に参加して翻訳を手伝ってください！
The loadstart event is fired when progress has begun.
General info
- Specification
- Progress
- Interface
- ProgressEvent
- Bubbles
- No
- Cancelable
- No
- Target
- Element
- Default Action
- None
Properties
| Property | Type | Description |
|---|---|---|
target Read only |
EventTarget |
The event target (the topmost target in the DOM tree). |
type Read only |
DOMString |
The type of event. |
bubbles Read only |
boolean |
Does the event normally bubble? |
cancelable Read only |
boolean |
Is it possible to cancel the event? |
lengthComputable |
boolean | Specifies whether or not the total size of the transfer is known. Read only. |
loaded |
unsigned long (long) | The number of bytes transferred since the beginning of the operation. This doesn't include headers and other overhead, but only the content itself. Read only. |
total |
unsigned long (long) | The total number of bytes of content that will be transferred during the operation. If the total size is unknown, this value is zero. Read only. |