The clearMarks() method removes the named mark from the browser's performance entry buffer. If the method is called with no arguments, all performance entries with an entry type of "mark" will be removed from the performance entry buffer.
Syntax
performance.clearMarks(); performance.clearMarks(name);
Arguments
- name Optional
- A
DOMStringrepresenting the name of the timestamp. If this argument is omitted, allperformance entrieswith anentry typeof "mark" will be removed.
Return value
- void
Example
The following example shows both uses of the clearMarks() method.
function clear_mark(name) {
if (performance.clearMarks === undefined) {
console.log("performance.clearMarks Not supported");
return;
}
// Remove all "mark" performance entry types with the specified name
performance.clearMarks(name);
}
function clear_all_marks() {
if (performance.clearMarks === undefined) {
console.log("performance.clearMarks Not supported");
return;
}
// Remove all "mark" type performance entries from the performance buffer
performance.clearMarks();
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| User Timing The definition of 'clearMarks()' in that specification. |
Editor's Draft | Clarifies clearMarks(). |
| User Timing The definition of 'clearMarks()' in that specification. |
Recommendation | Basic definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 43.0 | (Yes) | 41 | 10 | 33 | No support |
| Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|---|
| Basic support | No support | 46.0 | (Yes) | 42 | 42 | 10 | 33 | No support | 46.0 |