secureConnectionStart
只读特性返回
timestamp
immediately before the browser starts the handshake process to secure the current connection. If a secure connection is not used, the property returns zero.
resource.secureConnectionStart;
If the resource is fetched over a secure connection, a
DOMHighResTimeStamp
immediately before the browser starts the handshake process to secure the current connection. If a secure connection is not used, this property returns zero.
In the following example, the value of the
*Start
and
*End
properties of all "
resource
"
type
events are logged.
function print_PerformanceEntries() {
// Use getEntriesByType() to just get the "resource" events
var p = performance.getEntriesByType("resource");
for (var i=0; i < p.length; i++) {
print_start_and_end_properties(p[i]);
}
}
function print_start_and_end_properties(perfEntry) {
// Print timestamps of the PerformanceEntry *start and *end properties
properties = ["connectStart", "connectEnd",
"domainLookupStart", "domainLookupEnd",
"fetchStart",
"redirectStart", "redirectEnd",
"requestStart",
"responseStart", "responseEnd",
"secureConnectionStart"];
for (var i=0; i < properties.length; i++) {
// check each property
var supported = properties[i] in perfEntry;
if (supported) {
var value = perfEntry[properties[i]];
console.log("... " + properties[i] + " = " + value);
} else {
console.log("... " + properties[i] + " = NOT supported");
}
}
}
| 规范 | 状态 | 注释 |
|---|---|---|
|
Resource Timing Level 1
The definition of 'secureConnectionStart' in that specification. |
候选推荐 | 初始定义。 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
secureConnectionStart
|
Chrome 43 | Edge 18 | Firefox 40 | IE 不支持 No | Opera 30 | Safari 11 | WebView Android 43 | Chrome Android 43 | Firefox Android 42 | Opera Android 30 | Safari iOS 11 | Samsung Internet Android 4.0 |
完整支持
不支持
PerformanceResourceTiming