This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
console.timeStamp method adds a single marker to the browser's Performance
or Waterfall tool. This lets you
correlate a point in your code with the other events recorded in the timeline, such as
layout and paint events.
You can optionally supply an argument to label the timestamp, and this label will then be shown alongside the marker.
Note: This feature is available in Web Workers
- Label for the timestamp. Optional.