ProgressEvent.lengthComputable

The ProgressEvent.lengthComputable read-only property is a boolean flag indicating if the resource concerned by the ProgressEvent has a length that can be calculated. If not, the ProgressEvent.total property has no significant value.

Syntax

flag = ProgressEvent.lengthComputable

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
lengthComputable
50
12
3.5
10
37
3.1
50
50
4
37
2
5.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent/lengthComputable