loadstart

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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Событие loadstart происходит, когда начинается загрузка.

Property	Type	Description
`target` Только для чтения	`EventTarget`	The event target (the topmost target in the DOM tree).
`type` Только для чтения	`DOMString`	The type of event.
`bubbles` Только для чтения	`Boolean`	Whether the event normally bubbles or not.
`cancelable` Только для чтения	`Boolean`	Whether the event is cancellable or not.
`lengthComputable` Только для чтения	`Boolean`	Specifies whether or not the total size of the transfer is known. Read only.
`loaded` Только для чтения	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` Только для чтения	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.