react-use-scrollspy
                                Flexible React Hook to automatically update navigation based on scroll position 
                            
                        How to download and setup react-use-scrollspy
Open terminal and run command
                                            git clone https://github.com/Purii/react-use-scrollspy.git
                                        
                                        git clone is used to create a copy or clone of react-use-scrollspy repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with react-use-scrollspy https://github.com/Purii/react-use-scrollspy/archive/master.zip
Or simply clone react-use-scrollspy with SSH
                                            [email protected]:Purii/react-use-scrollspy.git                                    
                                    If you have some problems with react-use-scrollspy
You may open issue on react-use-scrollspy support forum (system) here: https://github.com/Purii/react-use-scrollspy/issuesSimilar to react-use-scrollspy repositories
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