Adding Google Analytics to React

Question

I am trying to add Google Analytics to a React Web Application.

I know how to do it in HTML/CSS/JS sites and I have integrated it in an AngularJS app too. But, I\'m not

Answer 1

Update: Feb 2019
As I saw that this question is being searched a lot, I decided to expand my explanation.
To add Google Analytics to React, I recommend using React-GA.
Add by running:
npm install react-ga --save

Initialization:
In a root component, initialize by running:

import ReactGA from 'react-ga';
ReactGA.initialize('Your Unique ID');

To report page view:

ReactGA.pageview(window.location.pathname + window.location.search);

To report custom event:

ReactGA.event({
  category: 'User',
  action: 'Sent message'
});

More instructions can be found in the github repo

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The best practice for this IMO is using react-ga. Have a look at the github rep