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
var type = entry.entryType;
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.
Value | Subtype | Type of name property | Description of name property |
---|---|---|---|
element | PerformanceElementTiming | DOMString | Reports load time of elements. |
navigation | 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 |
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); } }
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
entryType |
28 |
12 |
35 |
10 |
15 |
11 |
≤37 |
28 |
35 |
14 |
11 |
1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry/entryType