Web/API/PerformanceEntry/entryType

The entryType property returns a DOMString representing the type of performance metric such as, for example, "mark". This property is read only.

Note: This feature is available in Web Workers.

Syntax

var type = entry.entryType;

Return value

The return value depends on the subtype of the PerformanceEntry object and affects the value of the PerformanceEntry.name property as shown by the table below.

Performance entry type names

Value	Subtype	Type of name property	Description of name property
frame, navigation	PerformanceFrameTiming, PerformanceNavigationTiming	URL	The document's address.
resource	PerformanceResourceTiming	URL	The resolved URL of the requested resource. This value doesn't change even if the request is redirected.
mark	PerformanceMark	DOMString	The name used when the mark was created by calling performance.mark().
measure	PerformanceMeasure	DOMString	name used when the measure was created by calling performance.measure().
paint	PerformancePaintTiming	DOMString	Either 'first-paint' or 'first-contentful-paint'.
longtask	PerformanceLongTaskTiming	DOMString	reports instances of long tasks

Example

The following example shows the use of the entryType property.

function run_PerformanceEntry() {

  // check for feature support before continuing
  if (performance.mark === undefined) {
    console.log("performance.mark not supported");
    return;
  }

  // Create a performance entry named "begin" via the mark() method
  performance.mark("begin");
  
  // Check the entryType of all the "begin" entries
  var entriesNamedBegin = performance.getEntriesByName("begin");
    for (var i=0; i < entriesNamedBegin.length; i++) {
      var typeOfEntry = entriesNamedBegin[i].entryType;
      console.log("Entry is type: " + typeOfEntry);
  }

}

Specifications

Specification	Status	Comment
Performance Timeline Level 2The definition of 'entryType' in that specification.	Candidate Recommendation
Performance TimelineThe definition of 'entryType' in that specification.	Recommendation	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.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
entryType	Chrome Full support Yes	Edge Full support 12	Firefox Full support Yes	IE Full support Yes	Opera Full support Yes	Safari Full support 11	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 25	Opera Android Full support Yes	Safari iOS Full support 11	Samsung Internet Android Full support Yes

Legend

Full support  

Full support

PerformanceEntry.entryType by Mozilla Contributors is licensed under CC-BY-SA 2.5.