The ProgressEvent()
constructor returns a newly created ProgressEvent
, representing the current completion of a long process.
progressEvent = new ProgressEvent(type, {lengthComputable: aBooleanValue, loaded: aNumber, total: aNumber});
The ProgressEvent()
constructor also inherits arguments from Event()
.
DOMString
representing the name of the type of the ProgressEvent
. It is case-sensitive.lengthComputable
Optional
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. It defaults to false
.loaded
Optional
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. It defaults to 0
.total
Optional
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. It defaults to 0
.Specification | Status | Comment |
---|---|---|
Progress Events The definition of 'ProgressEvent()' in that specification. | Candidate Recommendation | Initial definition. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 22.0 (22.0) | Not supported | Not supported | Not supported |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | Not supported | 22.0 (22.0) | Not supported | Not supported | Not supported |
ProgressEvent
interface it belongs to.
© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent/ProgressEvent