JS console.count() and console.countReset() functions

The console.count() method logs the number of times that this particular call to count() has been called and countReset() resets the counts. Both of these functions are extremely useful when debugging react code, for example when trying to count how many times a component has been rendered.

Also both can take an optional label parameter in order to have multiple counters.

• count on MDN
• countReset on MDN