The entryType
property returns a DOMString
representing the type of performance metric such as, for example, "mark
". This property is read only.
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.
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 Time Level 2 The definition of 'entryType' in that specification. |
Editor's Draft | |
Performance Timeline The definition of 'entryType' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support. | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | No support |
Feature | Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support. | (Yes) | (Yes) | 25.0 (25.0) | 1.2 (25.0) | 10.0 | (Yes) | No support |