The name property of the PerformanceEntry interface returns a value that further specifies the value returned by the PerformanceEntry.entryType property. This property is read only.

Note: This feature is available in Web Workers.


var name =;

Return value

The return value depends on the subtype of the PerformanceEntry object and the value of PerformanceEntry.entryType, as shown by the table below.

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


The following example shows the use of the name property.

function run_PerformanceEntry() {
  log("PerformanceEntry support ...");

  if (performance.mark === undefined) {
    log("... performance.mark Not supported");

  // Create some performance entries via the mark() method

  // Use getEntries() to iterate through the each entry
  var p = performance.getEntries();
  for (var i=0; i < p.length; i++) {
    log("Entry[" + i + "]");
function check_PerformanceEntry(obj) {
  var properties = ["name", "entryType", "startTime", "duration"];
  var methods = ["toJSON"];

  for (var i=0; i < properties.length; i++) {
    // check each property
    var supported = properties[i] in obj;
    if (supported)
      log("..." + properties[i] + " = " + obj[properties[i]]);
      log("..." + properties[i] + " = Not supported");
  for (var i=0; i < methods.length; i++) {
    // check each method
    var supported = typeof obj[methods[i]] == "function";
    if (supported) {
      var js = obj[methods[i]]();
      log("..." + methods[i] + "() = " + JSON.stringify(js));
    } else {
      log("..." + methods[i] + " = Not supported");


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

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
nameChrome Full support YesEdge Full support 12Firefox Full support YesIE Full support YesOpera Full support YesSafari Full support 11WebView Android Full support YesChrome Android Full support YesFirefox Android Full support 25Opera Android Full support YesSafari iOS Full support 11Samsung Internet Android Full support Yes


Full support
Full support