How does react-router v4 change the url without refreshing the page?

I can understand that the hash changes do not refresh the page in

hash mode.

but after using react-router 4, I found that the default is not hash mode, and the page does not reload after router changes url.

want to know what technology it is


history
history.pushState , history.replaceState modify history
history.popstate listening history

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b313d8-2bd85.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b313d8-2bd85.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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