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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.
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 The definition of 'encodedBodySize' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support. | 54.0 | No support | No support | 41 | No support |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support. | No support | 54.0 | No support | No support | No support | 41 | No support | 54.0 |