Performance: clearMarks() method
The clearMarks()
method removes all or specific PerformanceMark
objects from the browser's performance timeline.
Syntax
js
clearMarks()
clearMarks(name)
Parameters
name
Optional-
A string representing the
name
of thePerformanceMark
object. If this argument is omitted, all entries with anentryType
of"mark"
will be removed.
Return value
None (undefined
).
Examples
Removing markers
To clean up all performance marks, or just specific entries, use the clearMarks()
method like this:
js
// Create a bunch of marks
performance.mark("login-started");
performance.mark("login-started");
performance.mark("login-finished");
performance.mark("form-sent");
performance.mark("video-loaded");
performance.mark("video-loaded");
performance.getEntriesByType("mark").length; // 6
// Delete just the "login-started" mark entries
performance.clearMarks("login-started");
performance.getEntriesByType("mark").length; // 4
// Delete all of the mark entries
performance.clearMarks();
performance.getEntriesByType("mark").length; // 0
Specifications
Specification |
---|
User Timing # dom-performance-clearmarks |
Browser compatibility
BCD tables only load in the browser