javascript - thinkphp3.2.3+HTML5 problem

Question

Regarding positioning check-in, you cannot open it if it exceeds this range. Once you are positioned, you need to read your current latitude and longitude, and then determine whether the current longitude and latitude are within the range of the longitude and latitude you set. , how to do this? Thank you

Answer 1

You have described the process very clearly. Just implement it in code

Answer 2

Yes, just type in the code

Answer 3

It has nothing to do with thinkphp, it has something to do with the geography API. You can write it by specifically checking the API (https://developer.mozilla.org...). Do you have any questions?