How get client id in google analytics 4?

@aniyah.green 

In Google Analytics 4, the client ID is automatically generated by the gtag.js library. To access the client ID, you can use the following JavaScript code:

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gtag('get', 'GA4_MEASUREMENT_ID', 'client_id', function (result) {
  var clientId = result.client_id;
  console.log(clientId); // Display the client ID in the browser console
});

Replace GA4_MEASUREMENT_ID with your actual Measurement ID which can be found in the Google Analytics admin interface.

Note that the client ID is generated and assigned by the Google Analytics library, and there is no direct method to retrieve it using JavaScript or any API.