Web/API/PerformanceNavigationTiming/loadEventStart
This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.
The loadEventStart read-only property returns a timestamp representing the time value equal to the time immediately before the load event of the current document is fired.
Syntax
perfEntry.loadEventStart;
Return Value
A timestamp representing a time value equal to the time immediately before the load event of the current document is fired.
Example
The following example illustrates this property's usage.
function print_nav_timing_data() {
// Use getEntriesByType() to just get the "navigation" events
var perfEntries = performance.getEntriesByType("navigation");
for (var i=0; i < perfEntries.length; i++) {
console.log("= Navigation entry[" + i + "]");
var p = perfEntries[i];
// dom Properties
console.log("DOM content loaded = " + (p.domContentLoadedEventEnd - p.domContentLoadedEventStart));
console.log("DOM complete = " + p.domComplete);
console.log("DOM interactive = " + p.interactive);
// document load and unload time
console.log("document load = " + (p.loadEventEnd - p.loadEventStart));
console.log("document unload = " + (p.unloadEventEnd - p.unloadEventStart));
// other properties
console.log("type = " + p.type);
console.log("redirectCount = " + p.redirectCount);
}
}Specifications
| Specification | Status | Comment |
| Navigation Timing Level 2The definition of 'loadEventStart' in that specification. | Working Draft | Initial definition. |
Browser compatibility
The compatibility table on 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.
PerformanceNavigationTiming.loadEventStart by Mozilla Contributors is licensed under CC-BY-SA 2.5.
