How to set up Google Analytics for React-Router?

I'm trying set up Google Analytics on my react site, and have come across a few packages, but none of which has the kind of set up that I have in terms of examples. Was hoping someone could shed some light on this.

The package I'm looking at is, react-ga.

My render method on my index.js looks like this.

React.render((
<Router history={createBrowserHistory()}>
    <Route path="/" component={App}>
        <IndexRoute component={Home} onLeave={closeHeader}/>
        <Route path="/about" component={About} onLeave={closeHeader}/>
        <Route path="/gallery" component={Gallery} onLeave={closeHeader}/>
        <Route path="/contact-us" component={Contact} onLeave={closeHeader}>
            <Route path="/contact-us/:service" component={Contact} onLeave={closeHeader}/>
        </Route>
        <Route path="/privacy-policy" component={PrivacyPolicy} onLeave={closeHeader} />
        <Route path="/feedback" component={Feedback} onLeave={closeHeader} />
    </Route>
    <Route path="*" component={NoMatch} onLeave={closeHeader}/>
</Router>), document.getElementById('root'));

Keep a reference to your history object. i.e.

import { createBrowserHistory } from 'history';

var history = createBrowserHistory();

ReactDOM.render((
    <Router history={history}>
        [...]

Then add a listener to record each pageview. (This assumes you've already set up the window.ga object in the usual manner.)

history.listen((location) => {
    window.ga('set', 'page', location.pathname + location.search);
    window.ga('send', 'pageview');
});

Since react-router v5.1.0 this can be solved a lot easier with useLocation.

usePageTracking.js

import { useEffect} from "react";
import { useLocation } from "react-router-dom";
import ReactGA from "react-ga";

const usePageTracking = () => {
  const location = useLocation();

  useEffect(() => {
    ReactGA.initialize("UA-000000000-0");
    ReactGA.pageview(location.pathname + location.search);
  }, [location]);
};

export default usePageTracking;

App.js

const App = () => {
  usePageTracking();

  return (...);
};

See also:

• https://reactrouter.com/web/api/Hooks/uselocation
• https://github.com/react-ga/react-ga/issues/122

Here's a bit smarter version:

usePageTracking.js

import { useEffect, useState } from "react";
import { useLocation } from "react-router-dom";
import ReactGA from "react-ga";

const usePageTracking = () => {
  const location = useLocation();
  const [initialized, setInitialized] = useState(false);

  useEffect(() => {
    if (!window.location.href.includes("localhost")) {
      ReactGA.initialize("UA-000000000-0");
    }
    setInitialized(true);
  }, []);

  useEffect(() => {
    if (initialized) {
      ReactGA.pageview(location.pathname + location.search);
    }
  }, [initialized, location]);
};

export default usePageTracking;

Given that google analytics is loaded and initialised with a tracking id.

Here is a solution for react-router version 4 using the <Route> component to track page views.

<Route path="/" render={({location}) => {
  if (typeof window.ga === 'function') {
    window.ga('set', 'page', location.pathname + location.search);
    window.ga('send', 'pageview');
  }
  return null;
}} />

You simply render this component inside the <Router> (but not as a direct child of a <Switch>).

What happens is that whenever the location prop changes it causes a re-render of this component (not actually rendering anything) that fire a pageview.

I'm using React Router v4 and the Google Analytics Global Site Tag, which appears to be recommended at the time of writing this.

And here's my solution:

Create a component wrapped in withRouter from react-router-dom:

import React from 'react';
import { withRouter } from 'react-router-dom';
import { GA_TRACKING_ID } from '../config';

class GoogleAnalytics extends React.Component {
    componentWillUpdate ({ location, history }) {
        const gtag = window.gtag;

        if (location.pathname === this.props.location.pathname) {
            // don't log identical link clicks (nav links likely)
            return;
        }

        if (history.action === 'PUSH' &&
            typeof(gtag) === 'function') {
            gtag('config', GA_TRACKING_ID, {
                'page_title': document.title,
                'page_location': window.location.href,
                'page_path': location.pathname
            });
        }
    }

    render () {
        return null;
    }
}

export default withRouter(GoogleAnalytics);

Simply add the component within your router (I believe ideally after any routes that would be matched and any Switch components, because the analytics function should not be priority over your site rendering):

import React from 'react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
import IndexPage from './IndexPage';
import NotFoundPage from './NotFoundPage';
import GoogleAnalytics from './GoogleAnalytics';

const App = () => (
	<Router>
		<Switch>
			<Route exact path="/" component={IndexPage} />
			<Route component={NotFoundPage} />
		</Switch>
		<GoogleAnalytics />
	</Router>
);

As stated:

> withRouter will re-render its component every time the route changes with the > same props as render props

So when the route changes, the GoogleAnalytics component will update, it will receive the new location as props, and history.action will be either PUSH for a new history item or POP to signal going backwards through the history (which I think shouldn't trigger a page view, but you can adjust the if statements in componentWillUpdate as you see fit (you could even try componentDidUpdate with this.props instead, but I'm unsure which is better)).

Note if you're using the react-router-dom package from react-router-4 you can handle this like so:

import { Router, Route } from 'react-router-dom';
import { createBrowserHistory } from 'history';

const history = createBrowserHistory();
const initGA = (history) => {
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

  ga('create', 'YOUR_IDENTIFIER_HERE', 'auto');
  ga('send', 'pageview');

  history.listen((location) => {
    console.log("tracking page view: " + location.pathname);
    ga('send', 'pageview', location.pathname);
  });
};

initGA(history);

class App extends Component { //eslint-disable-line
  render() {
    return
      (<Router history={history} >
         <Route exact path="/x" component={x} />
         <Route exact path="/y" component={y} />
       </Router>)
  }
}

Note that this requires you to install the history package (npm install history). This is already a dependency of react-router-dom so you're not adding any page weight here.

Also note: It is not possible to use the BrowserRouter component AND instrument your ga tracking this way. This is okay because the BrowserRouter component is just a really thin wrapper around the Router object. We recreate the BrowserRouter functionality here with <Router history={history}> where const history = createBrowserHistory();.

I would suggest using the excellent react-router-ga package that is extremely lightweight and easy to configure, especially when using the BrowserRouter wrapper.

Import the component:

import Analytics from 'react-router-ga';

Then simply add the <Analytics> within your BrowserRouter:

<BrowserRouter>
    <Analytics id="UA-ANALYTICS-1">
        <Switch>
            <Route path="/somewhere" component={SomeComponent}/>
        </Switch>
    </Analytics>
</BrowserRouter>

I like how Mark Thomas Müller suggests here:

In your index.js

import ReactGA from 'react-ga'

ReactGA.initialize('YourAnalyticsID')

ReactDOM.render(<App />, document.getElementById('root'))

Where your routes are:

import React, { Component } from 'react'
import { Router, Route } from 'react-router-dom'
import createHistory from 'history/createBrowserHistory'
import ReactGA from 'react-ga'

const history = createHistory()
history.listen(location => {
	ReactGA.set({ page: location.pathname })
	ReactGA.pageview(location.pathname)
})

export default class AppRoutes extends Component {
	componentDidMount() {
		ReactGA.pageview(window.location.pathname)
	}

	render() {
		return (
			<Router history={history}>
				<div>
					<Route path="/your" component={Your} />
					<Route path="/pages" component={Pages} />
					<Route path="/here" component={Here} />
				</div>
			</Router>
		)
	}
}

Short, scalable and simple :)

> Always go with the library's recommended way

In the React-GA documentation, they have added a community component recommended for using with React Router: https://github.com/react-ga/react-ga/wiki/React-Router-v4-withTracker

Implementation

import withTracker from './withTracker';

ReactDOM.render(
  <Provider store={store}>
    <ConnectedRouter history={history}>
      <Route component={withTracker(App, { /* additional attributes */ } )} />
    </ConnectedRouter>
  </Provider>,
  document.getElementById('root'),
);

Code

import React, { Component, } from "react";
import GoogleAnalytics from "react-ga";

GoogleAnalytics.initialize("UA-0000000-0");

const withTracker = (WrappedComponent, options = {}) => {
  const trackPage = page => {
    GoogleAnalytics.set({
      page,
      ...options,
    });
    GoogleAnalytics.pageview(page);
  };

  // eslint-disable-next-line
  const HOC = class extends Component {
    componentDidMount() {
      // eslint-disable-next-line
      const page = this.props.location.pathname + this.props.location.search;
      trackPage(page);
    }

    componentDidUpdate(prevProps) {
      const currentPage =
        prevProps.location.pathname + prevProps.location.search;
      const nextPage =
        this.props.location.pathname + this.props.location.search;

      if (currentPage !== nextPage) {
        trackPage(nextPage);
      }
    }

    render() {
      return <WrappedComponent {...this.props} />;
    }
  };

  return HOC;
};

export default withTracker;

here is a simplest way to track all paths with some work arounds:

npm i --save history react-ga

create a file history.js

import { createBrowserHistory } from "history"
import ReactGA from "react-ga"

ReactGA.initialize(process.env.REACT_APP_GA)

const history = createBrowserHistory()
history.listen((location) => {
    ReactGA.pageview(location.pathname)
})

// workaround for initial visit
if (window.performance && (performance.navigation.type === performance.navigation.TYPE_NAVIGATE)) {
    ReactGA.pageview("/")
}

export default history

and then import it to where is set your Router

import history from "./history"

...

class Route extends Component {
render() {
    return (
        <Router history={history}>
            <Switch>
              <Route path="/" exact component={HomePage} />
              ...
            </Switch>
        </Router>
    )
}

export default Route

> References:

> Gustavo Gonzalez | medium.com

> History | GitHub

First, in your index.js set onUpdate function to call ga

import ga from 'ga.js';
onUpdate() {
  console.log('=====GA=====>', location.pathname);
  console.log('=====GA_TRACKING_CODE=====>', GA_TRACKING_CODE);
  ga("send", "pageview", location.pathname);
}

render() {
  return (
    <Router onUpdate={this.onUpdate.bind(this)}>...</Router>
  );
}

And ga.js:

'use strict';
if(typeof window !== 'undefined' && typeof GA_TRACKING_CODE !== 'undefined') {
  (function(window, document, script, url, r, tag, firstScriptTag) {
    window['GoogleAnalyticsObject']=r;
    window[r] = window[r] || function() {
      (window[r].q = window[r].q || []).push(arguments)
    };
    window[r].l = 1*new Date();
    tag = document.createElement(script),
    firstScriptTag = document.getElementsByTagName(script)[0];
    tag.async = 1;
    tag.src = url;
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
  })(
    window,
    document,
    'script',
    '//www.google-analytics.com/analytics.js',
    'ga'
  );

  var ga = window.ga;

  ga('create', GA_TRACKING_CODE, 'auto');

  module.exports = function() {
    return window.ga.apply(window.ga, arguments);
  };
} else {
  module.exports = function() {console.log(arguments)};
}

I suggest using the Segment analytics library and following the React quickstart guide to track page calls using the react-router library. You can allow the <Route /> component to handle when the page renders and use componentDidMount to invoke page calls. The example below shows one way you could do this:

    const App = () => (
      <div>
        <Switch>
          <Route exact path="/" component={Home} />
          <Route path="/about" component={About} />
        </Switch>
      </div>
    );
    
    export default App;

    export default class Home extends Component {
      componentDidMount() {
        window.analytics.page('Home');
      }
    
      render() {
        return (
          <h1>
            Home page.
          </h1>
        );
      }
    }

I’m the maintainer of https://github.com/segmentio/analytics-react. With Segment, you’ll be able to switch different destinations on-and-off by the flip of a switch if you are interested in trying multiple analytics tools (we support over 250+ destinations) without having to write any additional code. 

If you use hash or browser history you can do:

import trackingHit from 'tracking';

import { Router, browserHistory } from 'react-router';
browserHistory.listen(trackingHit);
// OR
import { Router, hashHistory } from 'react-router';
hashHistory.listen(trackingHit);

where ./tracking.es6

export default function(location) {
 	console.log('New page hit', location.pathname);
    // Do your shizzle here
}

basic react-ga implementation with your index.js

var ReactGA = require('react-ga'); // require the react-ga module
ReactGA.initialize('Your-UA-ID-HERE'); // add your UA code 

function logPageView() { // add this function to your component
  ReactGA.set({ page: window.location.pathname + window.location.search });
  ReactGA.pageview(window.location.pathname + window.location.search);
}

React.render((
<Router history={createBrowserHistory()} onUpdate={logPageView} > // insert onUpdate props here
    <Route path="/" component={App}>
        <IndexRoute component={Home} onLeave={closeHeader}/>
        <Route path="/about" component={About} onLeave={closeHeader}/>
        <Route path="/gallery" component={Gallery} onLeave={closeHeader}/>
        <Route path="/contact-us" component={Contact} onLeave={closeHeader}>
            <Route path="/contact-us/:service" component={Contact} onLeave={closeHeader}/>
        </Route>
        <Route path="/privacy-policy" component={PrivacyPolicy} onLeave={closeHeader} />
        <Route path="/feedback" component={Feedback} onLeave={closeHeader} />
    </Route>
    <Route path="*" component={NoMatch} onLeave={closeHeader} />
</Router>), document.getElementById('root'));

Based on @david-l-walsh and @bozdoz suggestions

I created a HOC that execute the window.ga('set','page','{currentUrl}) and window.ga('send', 'pageview'); function and is easly used directly in the router page...

this is the HOC:

import React from 'react';
import { history } from '../../store'; // or wherever you createBrowserHistory(); invokation is

function withGAHistoryTrack(WrappedComponent) {
  return class extends React.Component {
    constructor(props) {
      super(props);
    }

    componentDidMount() {
      const { location } = history;
      const page = location.pathname + location.search;

      if (typeof window.ga === 'function') {
        window.ga('set', 'page', page);
        window.ga('send', 'pageview');
      }
    }

    render() {
      return <WrappedComponent {...this.props} />;
    }
  };
}

export default withGAHistoryTrack;

and is used this way in the router page:

<Route
 path={'yourPath'}
 component={withGAHistoryTrack(yourComponent)}
 exact
/>

For dynamically updating url on some event (like onClick etc), following can be used:

 //Imports
 import ReactGA from "react-ga";
 import { createBrowserHistory } from "history";

 // Add following on some event, like onClick (depends on your requirement)
 const history = createBrowserHistory();
 ReactGA.initialize("<Your-UA-ID-HERE>");
 ReactGA.pageview(history.location.pathname);