Which search algorithm does Map.prototype.has use internally?

Question

This method is relatively fast and I was wondering which search algorithm does it implement internally. I had a look in the ECMASCript spec but it wasn't very enlightening:

Map.prototype.has

Answer 1

This is a similar question Javascript ES6 computational/time complexity of collections

In summary ECMA only specify requirements, so each browser or javascript engine implements his own algorihtm.

I recomend you to see how Hash tables works Wikipedia Hash table