Web/API/PerformanceNavigationTiming/domContentLoadedEventStart
This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.
The domContentLoadedEventStart
read-only property returns a timestamp
representing the time value equal to the time immediately before the user agent fires the DOMContentLoaded event at the current document.
Syntax
perfEntry.domContentLoadedEventStart;
Return Value
A timestamp
representing the time value equal to the time immediately before the user agent fires the DOMContentLoaded event at the current document.
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 'domContentLoadedEventStart' 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.domContentLoadedEventStart by Mozilla Contributors is licensed under CC-BY-SA 2.5.