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This tutorial focuses on building a shopping cart in JavaScript or reactJS where users can add products. The shopping cart page should display the total price of the items ordered. The tutorial demonstrates how to calculate the total price of items from an Array and Array Object using JavaScript. The JavaScript file is linked in the HTML page, and the output will be shown in the console in developer tools. An Array is created containing service names and prices, with each service having a name and price. Iteration through the items in the Array is shown to calculate the total price. The initial total price is set to zero, and then the total price of all services is calculated.