Salesforce Certified B2B Commerce Administrator Practice Test - Questions Answers, Page 23

When including additional JavaScript files in a Lightning web component, the developer should keep in mind the following considerations:

The files must be ES6 modules and must have names that are unique within the component's folder. This is because the files are imported by their relative path, and the file name becomes the module name. The files must also use the export and import keywords to expose or consume functionality from other modules.

A module can export named functions or variables that can be imported by other modules. The developer can use the export keyword to specify what to expose from a module, and the import keyword to specify what to consume from another module. The developer can also use the default keyword to export or import a single value from a module.Reference:

Import JavaScript Files into Lightning Web Components

JavaScript Modules

To retrieve metadata about a specific object, the developer should use the getObjectMetadata wire adapter. This adapter returns an object that contains metadata describing the fields, child relationships, record type, and theme info of an object. The developer can use this adapter to access information about an object's schema and layout without making an Apex call.Reference:

getObjectMetadata

Work with Salesforce Data

The connectedCallback lifecycle hook is invoked when a Lightning web component is inserted into the DOM. This is the best time to make an API call, as the component is ready to render data from the server.The other lifecycle hooks are not suitable for making API calls, as they either occur after the component is rendered (renderedCallback), when an error occurs (errorCallback), or when the component is removed from the DOM (disconnectedCallback)1.Reference:1: Call Apex Methods - Trailhead2

The CheckValidity method is a standard method that Lightning web components can implement to validate user input. It returns true if the input is valid, and false otherwise. The developer can use this method to check if the user has checked the Terms and Conditions checkbox, and prevent them from proceeding to checkout if they have not.The other methods are not standard methods for Lightning web components, and would have to be custom defined by the developer3.Reference:3: Validate User Input - Trailhead4

A developer can expose delivery time estimates to NTO's customers in the storefront by displaying the Expected Delivery Date on the order page with a Lightning web component. This way, the customers can see the delivery date of their orders in real time, without having to wait for an email confirmation or contact customer service.A Lightning web component is a custom HTML element that can render dynamic data from Salesforce B2B Commerce using Apex and JavaScript1.The developer can use the ccrz.cc_api_DeliveryDate.getDeliveryDates method to get the expected delivery date for an order, based on various factors such as inventory availability, shipping method, and requested delivery date2.The developer can then display the expected delivery date on the order page using a Lightning web component template and style3.Reference:1: Build Lightning Web Components - Trailhead,2: Set Up the Requested Delivery Date Picker on the Checkout Page - Salesforce,3: Create and Use Lightning Web Components in B2B Commerce - Trailhead

Option B is the correct template to display the details message only when areDetailsVisible becomes true. This is because Option B uses the if:true directive on a nested <template> tag that encloses the conditional content.The if:true directive binds data to the template and removes and inserts DOM elements based on whether the data is a truthy or falsy value1.Option A, C, and D are incorrect because they do not use the if:true directive on a nested <template> tag, and therefore will not render the content conditionally.Reference:1: Render HTML Conditionally - Trailhead2

Lightning Data Service is a standard controller that provides a declarative way to access and modify Salesforce data in Lightning web components. It has the following advantages:

It combines and de-duplicates server calls to optimize performance and reduce network traffic. It caches data on the client side and shares it across components, so that multiple components can use the same data without making redundant requests to the server.

It loads record data progressively, meaning that it displays the cached data first and then updates it with the latest data from the server. This way, it improves the user experience by reducing the perceived loading time and avoiding flickering of data on the screen.Reference:

Lightning Data Service Basics

Work with Salesforce Data

Debug mode is a feature that allows developers to debug their Lightning web components by providing more detailed information about errors and warnings in the browser console. However, if a developer leaves debug mode turned on in an environment, it can have a negative impact on the performance and functionality of the org. One of the possible consequences is that the user will begin getting JavaScript limit exceptions, which are errors that occur when a component exceeds the maximum amount of JavaScript resources allowed by Salesforce. Debug mode increases the size of the JavaScript code and makes it more likely to hit these limits, especially in complex or large applications.Reference:

Debug Your Code

JavaScript Limits

To accept credit card payments using a client's chosen payment provider, a developer must take the following three actions in a B2B Commerce store:

Create a named credential for authentication with the payment provider. A named credential is a Salesforce feature that defines the URL of a callout endpoint and its required authentication parameters.By creating a named credential for the payment provider, the developer can securely store the credentials and use them in Apex code without hardcoding them1.

Create an Apex class that implements the commercepayments.PaymentGatewayAdapter interface. This interface defines the methods that a custom payment provider class must implement to process credit card payments in B2B Commerce.The developer must implement the methods such as authorize, capture, refund, and void to handle the payment transactions with the payment provider's API2.

Create a PaymentProviderGateway record for the custom payment provider class. This record is a custom metadata type that defines the properties of the payment provider, such as its name, label, description, and Apex class name.By creating this record, the developer can register the custom payment provider class with B2B Commerce and make it available for selection in the Payment Gateway Settings page3.Reference:1: Named Credentials - Trailhead4,2: Implementing Custom Payment Providers - Salesforce Developers Blog5,3: Integrate Payments into a B2B Commerce Store with Ease - Salesforce Developers Blog6