The encodedBodySize
read-only property represents the size (in octets) received from the fetch (HTTP or cache), of the payload body, before removing any applied content-codings.
Note: This feature is available in Web Workers.
If the resource is retrieved from an application cache or a local resource, it must return the size of the payload body before removing any applied content-codings.
Syntax
resource.encodedBodySize;
Return value
A number
representing the size (in octets) received from the fetch (HTTP or cache), of the payload body, before removing any applied content-codings.
Example
The following example, the value of the size properties of all "resource
" type
events are logged.
function log_sizes(perfEntry){ // Check for support of the PerformanceEntry.*size properties and print their values // if supported. if ("decodedBodySize" in perfEntry) console.log("decodedBodySize = " + perfEntry.decodedBodySize); else console.log("decodedBodySize = NOT supported"); if ("encodedBodySize" in perfEntry) console.log("encodedBodySize = " + perfEntry.encodedBodySize); else console.log("encodedBodySize = NOT supported"); if ("transferSize" in perfEntry) console.log("transferSize = " + perfEntry.transferSize); else console.log("transferSize = NOT supported"); } function check_PerformanceEntries() { // Use getEntriesByType() to just get the "resource" events var p = performance.getEntriesByType("resource"); for (var i=0; i < p.length; i++) { log_sizes(p[i]); } }
Specifications
Specification | Status | Comment |
---|---|---|
Resource Timing Level 2 The definition of 'encodedBodySize' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
encodedBodySize | Chrome Full support 54 | Edge Full support 17 | Firefox Full support 45 | IE No support No | Opera Full support 41 | Safari No support No | WebView Android Full support 54 | Chrome Android Full support 54 | Firefox Android Full support 45 | Opera Android Full support 41 | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
Legend
- Full support
- Full support
- No support
- No support