transferSize
read-only property represents the size (in octets) of the fetched resource. The size includes the response header fields plus the response payload body (as defined by
RFC7230
).
If the resource is fetched from a local cache, or if it is a cross-origin resource, this property returns zero.
resource.transferSize;
A
编号
representing the size (in octets) of the fetched resource. The size includes the response header fields plus the
response payload body
(RFC7230).
The following example, the value of 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]);
}
}
| 规范 | 状态 | 注释 |
|---|---|---|
|
Resource Timing Level 2
The definition of 'transferSize' in that specification. |
工作草案 | 初始定义。 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
transferSize
|
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