![React-router4: Cannot read property 'push' of undefined? - Codes Helper - Programming Question Answer React-router4: Cannot read property 'push' of undefined? - Codes Helper - Programming Question Answer](https://img.codeshelper.com/upload/img/2021/03/06/yw1uoyzmvsf4871.png)
React-router4: Cannot read property 'push' of undefined? - Codes Helper - Programming Question Answer
The change from react-router v3 to v4 is still unable to change.:React-router4,react-router,react.js, routing
![What is React Router | under the hood | React Router Types | BrowserRouter, HashRouter, MemoryRouter - YouTube What is React Router | under the hood | React Router Types | BrowserRouter, HashRouter, MemoryRouter - YouTube](https://i.ytimg.com/vi/IG2gEY0mRLs/mqdefault.jpg)
What is React Router | under the hood | React Router Types | BrowserRouter, HashRouter, MemoryRouter - YouTube
![Whe I use the react route 4 history, but the console gives the follow warning. Can anyone tell me the reason? - Stack Overflow Whe I use the react route 4 history, but the console gives the follow warning. Can anyone tell me the reason? - Stack Overflow](https://i.stack.imgur.com/caEWM.png)
Whe I use the react route 4 history, but the console gives the follow warning. Can anyone tell me the reason? - Stack Overflow
![When using HashRouter in ReactJS this.props.location.state is undefined on page refresh - Stack Overflow When using HashRouter in ReactJS this.props.location.state is undefined on page refresh - Stack Overflow](https://i.stack.imgur.com/a11y1.png)
When using HashRouter in ReactJS this.props.location.state is undefined on page refresh - Stack Overflow
![Choosing A Router In React Apps. Learn the 4 Fundamental Types Of… | by Akash Shyam | Frontend Weekly | Medium Choosing A Router In React Apps. Learn the 4 Fundamental Types Of… | by Akash Shyam | Frontend Weekly | Medium](https://miro.medium.com/max/1400/1*Jx9lN6T08xIurdHebnSXgA.png)