SALESFORCE-PD1 User Interface Practice Question
A developer creates a Lightning Web Component that includes a third-party JavaScript library loaded via a Static Resource. In which lifecycle hook should the third-party library be initialized?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
connectedCallback
Third-party scripts loaded via loadScript should be initialized in connectedCallback or renderedCallback, typically after successful promise resolution.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
disconnectedCallback
Why it's wrong here
Used for cleanup, not initialization.
- ✓
connectedCallback
Why this is correct
Appropriate for initiating asynchronous operations like loading scripts.
- ✗
renderedCallback
Why it's wrong here
Can cause multiple loads if not guarded against repeated renders.
- ✗
constructor
Why it's wrong here
DOM elements and static resources are not ready during the constructor.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SALESFORCE-PD1 exam.