sidebar_label
Page.metrics

Page.metrics() method

Signature:

class Page {
  metrics(): Promise<Metrics>;
}

Returns:

Promise<Metrics>

Object containing metrics as key/value pairs.

Timestamp : The timestamp when the metrics sample was taken.
Documents : Number of documents in the page.
Frames : Number of frames in the page.
JSEventListeners : Number of events in the page.
Nodes : Number of DOM nodes in the page.
LayoutCount : Total number of full or partial page layout.
RecalcStyleCount : Total number of page style recalculations.
LayoutDuration : Combined durations of all page layouts.
RecalcStyleDuration : Combined duration of all page style recalculations.
ScriptDuration : Combined duration of JavaScript execution.
TaskDuration : Combined duration of all tasks performed by the browser.
JSHeapUsedSize : Used JavaScript heap size.
JSHeapTotalSize : Total JavaScript heap size.

Remarks

All timestamps are in monotonic time: monotonically increasing time in seconds since an arbitrary point in the past.