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Question 6 - Certified B2B Commerce Developer discussion

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What are two considerations to keep in mind when including additional JavaScript files in a Lightning web component?

A.
Each additional file needs a corresponding .js-meta.xml file.
Answers
A.
Each additional file needs a corresponding .js-meta.xml file.
B.
The files must be ES6 modules and must have names that are unique within the component's folder.
Answers
B.
The files must be ES6 modules and must have names that are unique within the component's folder.
C.
A module can export named functions or variables
Answers
C.
A module can export named functions or variables
D.
Additional JavaScript files should be minified before deployment
Answers
D.
Additional JavaScript files should be minified before deployment
Suggested answer: B, C

Explanation:

When including additional JavaScript files in a Lightning web component, a developer should keep in mind two considerations: the files must be ES6 modules and must have names that are unique within the component's folder and a module can export named functions or variables. The files must be ES6 modules because LWC uses ES6 modules as the standard for modular JavaScript code. The files must have names that are unique within the component's folder because LWC uses the file name as the module identifier and does not allow duplicate identifiers. A module can export named functions or variables because LWC supports named exports, which allow a module to export multiple values with different names. Each additional file does not need a corresponding .js-meta.xml file, as this is only required for the main JavaScript file of the component. Additional JavaScript files should not be minified before deployment, as this is not necessary or recommended for LWC. Salesforce

Reference: [Lightning Web Components Developer Guide: Include JavaScript Files], [Lightning Web Components Developer Guide: ES6 Modules]

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asked 23/09/2024
Eduardo Rives
40 questions
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