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PerformanceNavigationTiming.type

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The type read-only property returns a string representing the type of navigation. The value must be one of the following:

navigate
Navigation started by clicking a link, entering the URL in the browser's address bar, form submission, or initializing through a script operation other than reload and back_forward as listed below.
reload
Navigation is through the browser's reload operation or location.reload().
back_forward
Navigation is through the browser's history traversal operation.
prerender
Navigation is initiated by a prerender hint.

This property is Read only .

Syntax

perfEntry.type;

Return Value

A string which is one of the values listed above.

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 2
The definition of 'type' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support. 57 (Yes) No support No support 44 No support
Feature Android Webview Chrome for Android Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support. 57 57 (Yes) No support No support No support 44 No support

Document Tags and Contributors

 Contributors to this page: jpmedley, abbycar, rolfedh, AFBarstow
 Last updated by: jpmedley,