我们的志愿者还没有将这篇文章翻译为 中文 (简体)。加入我们帮助完成翻译!
您也可以阅读此文章的English (US)版。
PerformanceMark
is an abstract interface for PerformanceEntry
objects with an entryType
of "mark
". Entries of this type are created by calling performance.mark()
to add a named DOMHighResTimeStamp
(the mark) to the browser's performance timeline.
<div id="interfaceDiagram" style="display: inline-block; position: relative; width: 100%; padding-bottom: 11.666666666666666%; vertical-align: middle; overflow: hidden;"><svg style="display: inline-block; position: absolute; top: 0; left: 0;" viewbox="-50 0 600 70" preserveAspectRatio="xMinYMin meet"><a xlink:href="https://developer.mozilla.org/en-US/docs/Web/API/PerformanceEntry" target="_top"><rect x="1" y="1" width="160" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="81" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">PerformanceEntry</text></a><polyline points="161,25 171,20 171,30 161,25" stroke="#D4DDE4" fill="none"/><line x1="171" y1="25" x2="201" y2="25" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMark" target="_top"><rect x="201" y="1" width="150" height="50" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px" /><text x="276" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">PerformanceMark</text></a></svg></div>
a:hover text { fill: #0095DD; pointer-events: all;}
Properties
This interface has no properties but it extends the following PerformanceEntry
properties by qualifying/constrainting the properties as follows:
PerformanceEntry.entryType
- Returns "
mark
". PerformanceEntry.name
- Returns the name given to the mark when it was created via a call to
performance.mark()
. PerformanceEntry.startTime
- Returns the
DOMHighResTimeStamp
whenperformance.mark()
was called. PerformanceEntry.duration
- Returns "
0
". (A mark has no duration.)
Methods
This interface has no methods.
Example
See the example in Using the User Timing API.
Specifications
Specification | Status | Comment |
---|---|---|
User Timing The definition of 'PerformanceMark' in that specification. |
Editor's Draft | |
User Timing The definition of 'PerformanceMark' in that specification. |
Recommendation | Basic definition. |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support. | 43 | (Yes) | 41 | 10 | 33 | No support |
Feature | Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support. | 46 | (Yes) | 42 | 42 | 10 | 33 | No support |