Free Salesforce JS-Dev-101 Exam Dumps Questions & Answers

Correct implementation of try...catch for countsDeep():

• A.  try {
  setTimeout(function() {
  countsDeep();
  }, 1000);
  } catch (e) {
  handleError(e);
  }
• B.  try {
  countsDeep();
  } handleError (e){
  catch(e);
  }
• C.  try {
  setTimeout(function() {
  countsDeep();
  }, 1000);
  } catch (e) {
  handleError(e);
  }
• D.  setTimeout(function() {
  try {
  countsDeep();
  } catch (e) {
  handleError(e);
  }
  }, 1000);

A developer has a fizzbuzz function that, when passed in a number, returns the following:
'fizz' if the number is divisible by 3.
'buzz' if the number is divisible by 5.
'fizzbuzz' if the number is divisible by both 3 and 5.
Empty string '' if the number is divisible by neither 3 nor 5.
Which two test cases properly test scenarios for the fizzbuzz function?

• A.  let res = fizzbuzz(true);
  console.assert(res === '');
• B.  let res = fizzbuzz(5);
  console.assert(res === 'fizz');
• C.  let res = fizzbuzz(15);
  console.assert(res === 'fizzbuzz');
• D.  let res = fizzbuzz(3);
  console.assert(res === '');

Refer to the code snippet:
01 let array = [1, 2, 3, 4, 4, 5, 4, 4];
02 for (let i = 0; i < array.length; i++) {
03 if (array[i] === 4) {
04 array.splice(i, 1);
05 i--;
06 }
07 }
What is the value of array after the code executes?

• A.  [1, 2, 3, 4, 5, 4]
• B.  [1, 2, 3, 4, 5, 4, 4]
• C.  [1, 2, 3, 5]
• D.  [1, 2, 3, 4, 4, 5, 4]

Refer to the code below:
01 async function functionUnderTest(isOK) {
02 if (isOK) return 'OK';
03 throw new Error('not OK');
04 }
Which assertion accurately tests the above code?

• A.  console.assert(functionUnderTest(true), 'OK')
• B.  console.assert(await functionUnderTest(true), 'not OK')
• C.  console.assert(await functionUnderTest(true), 'OK')
• D.  console.assert(await (functionUnderTest(true), 'not OK'))

Refer to the code below:
01 function myFunction(reassign) {
02 let x = 1;
03 var y = 1;
04
05 if (reassign) {
06 let x = 2;
07 var y = 2;
08 console.log(x);
09 console.log(y);
10 }
11
12 console.log(x);
13 console.log(y);
14 }
What is displayed when myFunction(true) is called?

• A.  2 2 1 1
• B.  2 2 undefined undefined
• C.  2 2 1 2
• D.  2 2 2 2