decodedBodySize
read-only property returns the size (in octets) received from the fetch (HTTP or cache) of the message body, after removing any applied content-codings. If the resource is retrieved from an application cache or local resources, it returns the size of the payload after removing any applied content-codings.
resource.decodedBodySize;
The size (in octets) received from the fetch (HTTP or cache) of the message body, after removing any applied content-codings.
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 *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]);
}
}
| 规范 | 状态 | 注释 |
|---|---|---|
|
Resource Timing Level 2
The definition of 'decodedBodySize' in that specification. |
工作草案 | 初始定义。 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
decodedBodySize
|
Chrome 54 | Edge 17 | Firefox 45 | IE 不支持 No | Opera 41 | Safari 不支持 No | WebView Android 54 | Chrome Android 54 | Firefox Android 45 | Opera Android 41 | Safari iOS 不支持 No | Samsung Internet Android 6.0 |
完整支持
不支持
PerformanceResourceTiming