Free Salesforce JS-Dev-101 Exam Questions

Absolute Free JS-Dev-101 Exam Practice for Comprehensive Preparation 

  • Salesforce JS-Dev-101 Exam Questions
  • Provided By: Salesforce
  • Exam: Salesforce Certified JavaScript Developer - Multiple Choice
  • Certification: Salesforce Certified Developer
  • Total Questions: 217
  • Updated On: Mar 08, 2026
  • Rated: 4.9 |
  • Online Users: 434
Page No. 1 of 44
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  • Question 1
    • A developer creates a simple webpage with an input field. When a user enters text in
      the input field and clicks the button, the actual value of the field must be displayed in the
      console.
      Here is the HTML file content:
      < input type ='' text'' value=''Hello'' name =''input'' >
      < button type =''button'' >Display < /button >
      The developer wrote the javascript code below:
      Const button = document.querySelector('button');
      button.addEvenListener('click', () => (
      Const input = document.querySelector('input');
      console.log(input.getAttribute('value'));
      When the user clicks the button, the output is always ''Hello''.
      What needs to be done make this code work as expected?

      Answer: A
  • Question 2
    • Refer to code below:
      console.log(0);
      setTimeout(() => (
      console.log(1);
      });
      console.log(2);
      setTimeout(() => {
      console.log(3);
      ), 0);
      console.log(4);
      In which sequence will the numbers be logged?

      Answer: C
  • Question 3
    • A developer receives a comment from the Tech Lead that the code given below has
      error:
      const monthName = 'July';
      const year = 2019;
      if(year === 2019) {
      monthName = 'June';
      }
      Which line edit should be made to make this code run?

      Answer: A
  • Question 4
    • Refer to the following array:
      Let arr1 = [ 1, 2, 3, 4, 5 ];

      Capture

      Which two lines of code result in a second array, arr2 being created such that arr2 is not
      a reference to arr1?

      Answer: A,B
  • Question 5
    • Refer to the code below:
      Const pi = 3.1415326,
      What is the data type of pi?

      Answer: B
PAGE: 1 - 44
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