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'.

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 2
The definition of 'entryType' in that specification.
Candidate Recommendation  
Performance Timeline
The definition of 'entryType' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support 11WebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 25Opera Android Full support YesSafari iOS Full support 11Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

Document Tags and Contributors

Last updated by: Sheppy,