Salesforce certification practice Updated for 2026

Salesforce JavaScript-Developer-I Salesforce Certified JavaScript Developer I

Build exam-day confidence with verified questions, detailed explanations, timed simulator sessions, and flexible download formats.

484 questions August 14, 2026 90 days free updates Instant access
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JavaScript-Developer-I PDF & Test Engine Bundle

The most complete path from first review to final simulator run.

  • 484 verified questions and answers
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  • Detailed explanations for every answer
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Question coverage

A complete map of the current exam.

Use the breakdown to plan review sessions around the highest-volume domains.

Question types

484total
  • Single Choices 358
  • Multiple Choices 124
  • Simulations 2

Every answer includes an explanation.

Exam topics

01 Variables, Types, and Collections 120 questions
02 Objects, Functions, and Classes 123 questions
03 Browser and Events 80 questions
04 Debugging and Error Handling 50 questions
05 Asynchronous Programming 55 questions
06 Server-Side JavaScript 30 questions
07 Testing 23 questions
08 Mix Questions 3 questions
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Preparation that translates into results.

55learners passed Salesforce JavaScript-Developer-I
89.6%average reported exam score
89.3%question similarity reported
Know the exam

Everything you need before scheduling.

What does the Salesforce JavaScript-Developer-I exam cover?

The current practice file follows the latest Salesforce JavaScript-Developer-I objectives and helps you review the knowledge areas tested on exam day.

How should I use the JavaScript-Developer-I practice questions?

Start with a diagnostic session, review explanations for missed questions, and repeat timed practice until your score and pacing are consistent.

How long do I receive updates?

Your purchase includes 90 days of free updates so your preparation stays aligned with the current exam.