ProgressEvent.initProgressEvent() - Web APIs 编辑

Deprecated

This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Non-standard

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The ProgressEvent.initProgressEvent() method Initializes an animation event created using the deprecated Document.createEvent("ProgressEvent") method.

ProgressEvent created that way are untrusted.

Note: this method has been dropped during the standard process. It has been deprecated and removed from most implementation. Do not use it anymore, use the standard constructor, ProgressEvent(), to create a synthetic ProgressEvent

Syntax

Progress.initProgressEvent(typeArg, canBubbleArg, cancelableArg, lengthComputable, loaded, total);

Parameters

typeArg

Is a DOMString identifying the specific type of animation event that occurred. The following values are allowed:

Value	Meaning
loadstart	The operation has started.
progress	The operation still is in progress.
error	The operation failed and didn't complete.
abort	The operation was cancelled and didn't complete.
load	The operation completed.
loadend	The operation stopped.

canBubbleArg

Is a Boolean flag indicating if the event can bubble (true) or not (false).

cancelableArg

Is a Boolean flag indicating if the event associated action can be avoided (true) or not (false).

lengthComputable

Is a Boolean flag indicating if the total work to be done, and the amount of work already done, by the underlying process is calculable. In other words, it tells if the progress is measurable or not.

loaded

Is an unsigned long long representing the amount of work already performed by the underlying process. The ratio of work done can be calculated with the property and ProgressEvent.total. When downloading a resource using HTTP, this only represent the part of the content itself, not headers and other overhead.

total

Is an unsigned long long representing the total amount of work that the underlying process is in the progress of performing. When downloading a resource using HTTP, this only represent the content itself, not headers and other overhead.

Specifications

This feature does not exist in any specifications.

Browser compatibility

BCD tables only load in the browser

See also

• The ProgressEvent interface it belongs to.