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

Javascript react.js react-router react-router4

Mar.19,2021

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

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The fetch return string in react contains a label on how to add react routing.
fetch(url) .then(res => res.text()) .then(result => { this.setState({ detail: result }); }); render () { return ( <div dangerouslySetInnerHTML={{ __html:thi...

Javascript react.js react-router react-router4

Jun.18,2021

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-64f5-1ea9025-469a1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea9025-469a1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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