The ProgressEvent.loaded read-only property is an integer 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 value is specified in bytes (not bits), and only represents the part of the content itself, not headers and other overhead.
ProgressEvent: loaded property
Value
A number.
Specifications
| Specification |
|---|
| XMLHttpRequest Standard # dom-progressevent-loaded |
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 | |
loaded |
1 | 12 | 3.5 | 10 | ≤12.1 | 3.1 | ≤37 | 18 | 4 | ≤12.1 | 2 | 1.0 |
See also
- The
ProgressEventinterface it belongs to.
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https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent/loaded