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[General] Questions for the Salesforce JS-Dev-101 Exam - 100% Money-Back Guarantee

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【General】 Questions for the Salesforce JS-Dev-101 Exam - 100% Money-Back Guarantee

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q44-Q49):NEW QUESTION # 44
Refer to the following code:
Let sampleText = 'The quick brown fox jumps';
A developer needs to determine if a certainsubstring is part of a string.
Which three expressions return true for the given substring ?
Choose 3 answers
  • A. sampleText.includes(' quick ', 4);
  • B. sampleText.includes(' fox ');
  • C. sampleText.includes(' quick ') !== -1;
  • D. sampleText.includes('fox');
  • E. sampleText.includes(' Fox ', 3)
Answer: A,B,C

NEW QUESTION # 45
A team that works on a big project uses npm to deal with projects dependencies.
A developer added a dependency does not get downloaded when they execute npm install.
Which two reasons could be possible explanations for this?
Choose 2 answers
  • A. The developer missed the option --save when adding the dependency.
  • B. The developer missed the option --add when adding the dependency.
  • C. The developer added the dependency as a dev dependency, andNODE_ENVIs set to production.
  • D. The developer added the dependency as a dev dependency, andNODE_ENV is set to production.
Answer: A,C,D

NEW QUESTION # 46
Refer to the code below:
let timeFunction =() => {
console.log('Timer called.");
};
let timerId = setTimeout (timedFunction, 1000);
Which statement allows a developer to cancel the scheduled timed function?
  • A. clearTimeout(timerId);
  • B. removeTimeout(timerId);
  • C. clearTimeout(timedFunction);
  • D. removeTimeout(timedFunction);
Answer: A

NEW QUESTION # 47
A developer copied a JavaScript object:

How does the developer access dan's forstName,lastName? Choose 2 answers
  • A. dan,firstname ( ) + dan, lastName ( )
  • B. dan,name ( )
  • C. dan,name
  • D. dan, firstName =dan.lastName
Answer: B,D

NEW QUESTION # 48
A developer has code that calculates a restaurant bill, but generates incorrect answers while testing the code:
function calculateBill (items ) {
let total = 0;
total += findSubTotal(items);
total += addTax(total);
total += addTip(total);
return total;
}
Which option allows the developer to step into each function execution within calculateBill?
  • A. Using the debugger command on line 03
  • B. Calling the console.trace (total) method on line 03.
  • C. Wrapping findSubtotal in a console.log() method.
  • D. Using the debugger command on line 05.
Answer: D

NEW QUESTION # 49
......
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