How to get the customer's data on the frontend checkout page's client side (with JavaScript) using the «window.customerData» object?

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dmitrii_fediuk (Dmitrii Fediuk) April 17, 2016, 10:12am 2

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How to get the customer’s data on the frontend checkout page’s client side (with JavaScript)?
frontend-checkout-customer-data - tagged articles.
The difference between window.customerData, Magento_Customer/js/customer-data, and Magento_Customer/js/model/customer on a frontend checkout page.