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CRT-600 Valid Test Camp - CRT-600 Reliable Exam Registration
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Salesforce CRT-600 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Debugging and Error Handling
  • Throwing and Catching Errors
  • Working with the Console
Topic 2
  • JavaScript Basics
  • Working with Strings, Numbers, and Dates
Topic 3
  • Objects, Functions, and Classes
  • Using JavaScript Modules
  • Declaring Classes
Topic 4
  • Browser and Events
  • Document Object Model
  • Browser Dev Tools
Topic 5
  • Type Conversion (explicit and implicit)
  • Working with JSON
  • Data Types and Variables
Topic 6
  • Asynchronous Programming
  • Callback Functions
  • Promises and Async
  • Await

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Salesforce Certified JavaScript Developer I Sample Questions (Q149-Q154):

NEW QUESTION # 149
Refer to the code below:
Const searchTest = 'Yay! Salesforce is amazing!" ;
Let result1 = searchText.search(/sales/i);
Let result 21 = searchText.search(/sales/i);
console.log(result1);
console.log(result2);
After running this code, which result is displayed on the console?

  • A. > true > false
  • B. > 5 > 0
  • C. > 5 >undefined
  • D. > 5 > -1

Answer: C


NEW QUESTION # 150
Refer to the code below
let inArray = [[1,2],[3,4,5]];
which two statements results in the array [1,2,3,4,5]?
choose 2 answer

  • A. [ ].concat(...inArray);
  • B. [ ].concat.apply([ ],inArray);
  • C. [ ].concat([...inArray])
  • D. [ ].concat.apply(inArray,[ ]);

Answer: A,B


NEW QUESTION # 151
Refer to the code below:
Function Person(firstName, lastName, eyecolor) {
this.firstName =firstName;
this.lastName = lastName;
this.eyeColor = eyeColor;
}
Person.job = 'Developer';
const myFather = new Person('John', 'Doe');
console.log(myFather.job);
What is the output after the code executes?

  • A. Undefined
  • B. ReferenceError: eyeColor is not defined
  • C. ReferenceError: assignment to undeclared variable "Person"
  • D. Developer

Answer: A


NEW QUESTION # 152
The developer wants to test this code:
Const toNumber =(strOrNum) => strOrNum;
Which two tests are most accurate for this code?
Choose 2 answers

  • A. console.assert(toNumber () === NaN);
  • B. console.assert(toNumber('-3') < 0);
  • C. console.assert(Number.isNaN(toNumber()));
  • D. console.assert(toNumber('2') === 2);

Answer: B,D


NEW QUESTION # 153
Which statement accurately describes an aspect of promises?

  • A. .then() cannot be added after a catch.
  • B. Arguments for the callback function passed to .then() are optional.
  • C. In a.then() function, returning results is not necessary since callbacks will catch the result of a previous promise.
  • D. .then() manipulates and returns the original promise.

Answer: B


NEW QUESTION # 154
......

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