API链接中%2C的含义是什么

Question

在这个API链接中，"%2C"的含义是什么

https://maps.googleapis.com/maps/api/place/details/json
?fields=name%2Crating%2Cformatted_phone_number
&place_id=ChIJN1t_tDeuEmsRUsoyG83frY4
&key=YOUR_API_KEY

参考：我想从这里创建自定义API：https://developers.google.com/maps/documentation/places/web-service/details#maps_http_places_details_fields-txt

Answer 1

%2C是为,编码的url

URL编码