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Free Salesforce Javascript-Developer-I Exam Questions

Absolute Free Javascript-Developer-I Exam Practice for Comprehensive Preparation 

  • Salesforce Javascript-Developer-I Exam Questions
  • Provided By: Salesforce
  • Exam: Salesforce Certified JavaScript Developer - Multiple Choice (JS-Dev-101)
  • Certification: Javascript Developer
  • Total Questions: 217
  • Updated On: Jul 22, 2026
  • Rated: 4.9 |
  • Online Users: 434
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  • Question 1
    • developer is trying to convince management that their team will benefit from using
      Node.js for a backend server that they are going to create. The server will be a web server that
      handles API requests from a website that the team has already built using HTML, CSS, and
      JavaScript.
      Which three benefits of Node.js can the developer use to persuade their manager?
      Choose 3 answers:

      Answer: A,C
  • Question 2
    • Refer to the following array:
      Let arr = [1, 2, 3, 4, 5];
      Which three options result in x evaluating as [1, 2]?
      Choose 3 answer

      Answer: A,B,C
  • Question 3
    • A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
      A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

      Capture

      Which two results occur when running this test on the updated sum3 function?
      Choose 2 answers

      Answer: B,D
  • Question 4
    • What is the result of the code block?

      Answer: D
  • Question 5
    • A developer creates a class that represents a blog post based on the requirement that a
      Post should have a body author and view count.
      The Code shown Below:
      Class Post {
      // Insert code here
      This.body =body
      This.author = author;
      this.viewCount = viewCount;
      }
      }
      Which statement should be inserted in the placeholder on line 02 to allow for a variable to be set
      to a new instanceof a Post with the three attributes correctly populated?

      Answer: C
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