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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Checkout Flow Development | 10% | - Checkout customization
|
| Topic 2: Lightning Web Component Development | 50% | - Advanced LWC Development
|
| Topic 3: Reference Implementations | 15% | - Checkout and payment architecture
|
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NEW QUESTION # 15
In which two ways can events fired fromLightning web components be handled?
Answer: A,C
Explanation:
Two ways that events fired fromLightning 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 invokedwhen 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 Web Components Developer Guide: Handle Events], [Lightning Web Components Developer Guide: Communicate with Events]
NEW QUESTION # 16
Which two scoped modules should a developer import in Lightning web components to check user permissions?
Answer: B,D
Explanation:
Explanation
To check user permissions in Lightning web components, a developer should import two scoped modules:
@salesforce/permission and @salesforce/customPermission. The @salesforce/permission module allows the developer to check if the user has access to a standard permission, such as View Setup or Modify All Data.
The @salesforce/customPermission module allows the developer to check if the user has access to a custom permission, such as Enable Debug Mode or Manage Orders. The other modules do not exist or are not related to user permissions. Salesforce References: Lightning Web Components Developer Guide: Check User Permissions, Lightning Web Components Developer Guide: Import Salesforce Modules
NEW QUESTION # 17
A developer needs to implement a custom Lightning web component (LWC) for the storefront.
The LWC contains language-specific text values.
How should the developer translate the text values?
Answer: C
Explanation:
Custom labels are text values that can be translated into any language that Salesforce supports. They are useful for displaying language-specific text in Lightning web components. To use custom labels in a LWC, the developer needs to create them in the Setup menu and assign them to a language and a value. Then, the developer can import them in the LWC using the @salesforce/label scoped module. For example, if the developer has a custom label named welcomeHeader, they can import it as follows:
import welcomeHeader from '@salesforce/label/c.welcomeHeader';
Then, they can use it in the HTML template or the JavaScript file of the LWC. For example, in the HTML template, they can use it as follows:
HTMLAI-generated code. Review and use carefully. More info on FAQ.
<template>
<h1>{welcomeHeader}</h1>
</template>
The custom label will automatically display the translated value based on the user's language preference. The developer can also use the lightning-formatted-text component to format the custom label value with HTML tags.
The other options are not correct because:
* A. Importing static resources for the text values is not a recommended way to translate text values in a LWC. Static resources are files that are stored in Salesforce and can be referenced by applications. They are not designed for storing language-specific text values and they do not support automatic translation based on the user's language preference.
* B. Using a CustomLabel xml file in the LWC to add the text values there is not a valid option. Custom labels are not stored in xml files, but in the Setup menu. They cannot be added directly to the LWC, but they need to be imported using the @salesforce/label scoped module.
* D. Creating a custom Metadata object for the text values and querying it in the LWC is not a feasible option. Custom Metadata objects are records that store configuration data that can be deployed and packaged. They are not intended for storing language-specific text values and they do not support automatic translation based on the user's language preference. Querying them in the LWC would also require an Apex class and a wire service, which would add unnecessary complexity to the solution.
References:
* Use Custom Labels in Lightning Web Components
* Custom Labels
* Internationalizing Your Lightning Web Component (LWC)
NEW QUESTION # 18
A developer is working in Visual Studio Code on a previously deployed project which is rather large and deployments are time consuming. The developer wants to deploy some small CSS changes without waiting for the entire project deployment. What are two ways this can be accomplished?
Answer: B,E
Explanation:
Two ways that a developer can deploy some small CSS changes without waiting for the entire project deployment are right-clicking the folder for the component and choosing Deploy Source to Org and right-clicking the CSS file that was edited and selecting Deploy Single File. Deploying source to org is a way of deploying metadata from a local project to an org using Salesforce CLI commands. The developer can use Visual Studio Code to execute these commands by right-clicking on files or folders in the project and choosing from various deployment options. Right-clicking the folder for the component and choosing Deploy Source to Org allows the developer to deploy only the files that belong to that component, such as HTML, JavaScript, CSS, and XML files. Right-clicking the CSS file that was edited and selecting Deploy Single File allows the developer to deploy only that CSS file and not any other files in the project. These options can save time and bandwidth for deploying small changes without affecting other components or files in the project. Modifying the StoreIntegratedService to map to an Apex class ID using Workbench is not a way of deploying CSS changes, as it is only used for registering internal services that are provided by Salesforce B2B Commerce out-of-the-box. Entering the integration class name and version in store administration is not a way of deploying CSS changes either, as it is only used for selecting an existing integration class that has already been registered as an external service. Salesforce References: Salesforce CLI Command Reference:
force:source:deploy, Salesforce Developer Tools for Visual Studio Code, B2B Commerce Developer Guide:
Integration Framework, B2B Commerce Developer Guide: RegisteredExternalService Object
NEW QUESTION # 19
Which two guidelines should a developer consider when migrating aura components to LWC?
Answer: C,D
Explanation:
When migrating aura components to LWC, a developer should consider two guidelines: migrate one component and then determine whether additional effort would make sense and start with simple components that only render UI. Migrating one component and then determining whether additional effort would make sense allows the developer to evaluate the benefits and costs of migration and decide whether to continue or stop. Migrating simple components that only render UI allows the developer to leverage the performance and modern features of LWC without much complexity or dependency on other components or services. Starting with migrating trees of components (components within components) is not a good guideline, as it can introduce more challenges and dependencies that can complicate the migration process. Forcing all developers to write any new components using Lightning web components is not a good guideline either, as it can create inconsistency and confusion among developers and users. Salesforce Reference: [Lightning Web Components Developer Guide: Migrate Aura Components to Lightning Web Components], [Lightning Web Components Developer Guide: Migration Considerations]
NEW QUESTION # 20
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