The read-only property is an integer 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.


value =


Specification Status Comment
The definition of 'ProgressEvent.lengthComputable' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No Yes3.5 No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No No Yes4 No No No

See also

Document Tags and Contributors

Contributors to this page: ddbeck, DomenicDenicola, abbycar, fscholz, kscarfone, teoli
Last updated by: ddbeck,