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| Section | Weight | Objectives |
|---|---|---|
| Reference Implementations | 15% | - Checkout and payment architecture
|
| Lightning Web Component Development | 50% | - Basic LWC Development
|
| Checkout Flow Development | 10% | - Checkout customization
|
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NEW QUESTION # 196
In which two ways can events fired from Lightning web components be handled?
Answer: B,C
Explanation:
Two ways that events fired from Lightning web components can be handled are programmatically adding event listeners and attaching handlers to DOM elements. Programmatically adding event listeners is a way of handling events by using JavaScript code to register functions that are invoked when an event occurs. The developer can use methods such as addEventListener or @wire to add event listeners to components or services that fire events. Attaching handlers to DOM elements is a way of handling events by using HTML attributes to bind functions that are invoked when an event occurs. The developer can use attributes such as onclick or onchange to attach handlers to DOM elements that fire events. Adding callbacks to components is not a valid way of handling events fired from Lightning web components, as it is not related to event handling, but rather to asynchronous programming. Listening for all possible events at the document root is not a valid way either, as it is not efficient or recommended for event handling, as it can cause performance issues or conflicts with other event listeners. Salesforce References: [Lightning WebComponents Developer Guide:
Handle Events], [Lightning Web Components Developer Guide: Communicate with Events]
NEW QUESTION # 197
Which event is triggered within Salesforce B2B Commerce whenever a cart's statechanges?
Answer: B
Explanation:
The event that is triggered within Salesforce B2B Commerce whenever a cart's state changes is cartChange. This event is triggered by the updateCart method of the CCRZ.Cart class, which is responsible for updating the cart data and performing any actions that depend on the cart state, such as applying discounts, taxes, or shipping charges. The event can be used to notify all the components that are listening to it that the cart has changed and they should refresh their data accordingly. Salesforce Reference: B2B Commerce and D2C Commerce Developer Guide, Events, Cart Class
NEW QUESTION # 198
Which three components should a developer use on the product page to replace the out-of-the-box Product Detail Card component?
Answer: A
Explanation:
Explanation
The Product Detail Card component is a standard component that displays the product information and options on the product page. It includes the following elements1:
* The product's SKU
* The product's unit of measure
* The product's available inventory, or a generic availability message, if specified
* The product's short description
* The product's price information
* The product's quantity selector
* The product's add to cart button
* The product's image gallery
To replace this component with custom components, a developer can use the following three components:
* Product Fields Short component: This component displays the product's short description, SKU, unit of measure, and price information. It also allows the developer to specify which fields to display and how to format them2.
* Product Field Long component: This component displays the product's long description, which can include rich text and images. It also allows the developer to specify which field to display and how to format it2.
* Product Detail Image Gallery component: This component displays the product's image gallery, which can include multiple images and thumbnails. It also allows the developer to specify the image field, the image size, and the image zoom option3.
These three components can be combined to create a custom product page that shows the product information and options in a different layout and style than the out-of-the-box Product Detail Card component.
References: Configure Product Info and Options on the Product Detail Page, Product Fields Short Component, Product Detail Image Gallery Component
NEW QUESTION # 199
A developer has created a custom Lightning web component for the Cart page that needs to react to changes to cart items from the standard cart component.
How should the developer implement the custom component so changes to cart items and quantities are reflected?
Answer: D
Explanation:
The developer should implement the custom component so that it subscribes to events on the lightning_commerce_cartChanged channel using the Lightning Message Service. This is the recommended way to communicate between custom and standard components on the Cart page, as it allows the custom component to receive updates from the standard cart component whenever the cart items or quantities change.
The Lightning Message Service is a pub/sub mechanism that enables components to communicate across the DOM, regardless of their namespace, technology, or source. The lightning_commerce_cartChanged channel is a predefined channel that carries information about the cart state, such as the cart ID, the cart items, and the cart total. References: Custom Component APIs, Lightning Message Service, Communicate Across the DOM with Lightning Message Service Learn more
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NEW QUESTION # 200
Which service method should be overridden in order to allow " without sharing " queries?
Answer: D
Explanation:
The service method that should be overridden in order to allow "without sharing" queries is ccrz.ccService.
initSVCDAO. This method is responsible for initializing the service data access object (SVCDAO) that is used by the service class to perform queries. By overridingthis method, the user can specify the sharing mode of the SVCDAO, which will determine whether the queries respect or ignore the sharing rules of the current user. For example, ccrz.ccService.initSVCDAO(ccrz.ccAPI.SZ_WITHOUTSHARING) will initialize theSVCDAO with the without sharing mode. Salesforce References: B2B Commerce and D2C Commerce Developer Guide, Service Classes, ccService Class
NEW QUESTION # 201
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