As Yandex maps to get the GPS coordinates to submit the form?

There is a problem that send in a form what are the coordinates for example
<input type="hidden" name="coor" value="WHAT's it gonna BE?">
July 9th 19 at 14:08
1 answer
July 9th 19 at 14:10
Clinging to the "moving map" and remember the coordinates.
Clinging to the OnSubmit event on the form and slip back to the saved coordinates.

Find more questions by tags Yandex.Maps