All B2B-Commerce-Developer Test Inside Salesforce Questions

To make an API call in a Lightning web component (LWC), a developer should use the connectedCallback lifecycle hook. The connectedCallback lifecycle hook is invoked when the component is inserted into the DOM. This is the ideal time to make an API call, as the component is ready to receive and display data. Thedeveloper can use the fetch API or a third-party library, such as axios, to make the API call and handle the response. The renderedCallback lifecycle hook is not a good choice for making an API call, as it is invoked every time the component is rendered or rerendered. This can cause unnecessary or repeated API calls and affect performance. The errorCallback lifecycle hook is not a good choice either, as it is invoked when an error occurs in the component or in one of its children. This is not related to making an API call, but rather to handling errors. The disconnectedCallback lifecycle hook is not a good choice either, as it is invoked when the component is removed from the DOM. This is not a suitable time to make an API call, as the component is no longer visible or active. Salesforce References: Lightning Web Components Developer Guide: Lifecycle Hooks, Lightning Web Components Developer Guide: Call an Apex Method Imperatively

To debug a specific block of Apex code, the Execute Anonymous window in the Salesforce Developer Console or an Integrated Development Environment (IDE) like Visual Studio Code with the Salesforce Extension Pack can be used. This tool allows developers to run Apex code snippets in isolation and observe the results immediately, which is valuable for identifying and resolving defects within specific code blocks.

If a developer leaves debug mode turned on in an environment, the user will begin getting JavaScript limit exceptions. Debug mode is a setting that enables more detailed logging and error reporting for Lightning web components. However, it also increases the size and complexity of the JavaScript code that is delivered to the browser, which can cause performance issues and JavaScript limit exceptions. The JavaScript limit exceptions are errors that occur when the browser reaches its maximum capacity for executing JavaScript code, such as memory heap size or script execution time. The performance of the org will not become slower each day, as debug mode only affects the client-side performance, not the server-side performance. The org will not turn off debug mode after 72 hours, as debug mode is a persistent setting that can only be changed manually by an administrator. A banner will not be displayed to the userindicating that the org is in debug mode, as debug mode is a transparent setting that does not affect the user interface. Salesforce References: Lightning Web Components Developer Guide: Debug Your Code, Lightning Web Components Developer Guide: JavaScript Limit Exceptions

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