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JS-Dev-101 Exam Collection: Salesforce Certified JavaScript Developer - Multiple Choice & JS-Dev-101 Top Torrent & JS-Dev-101 Exam Cram

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Salesforce JS-Dev-101 Exam Syllabus Topics:

Topic
Details

Topic 1

Browser and Events: Covers DOM manipulation, event handling and propagation, browser-specific APIs, and using Browser Developer Tools to inspect code behavior.

Topic 2

Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.

Topic 3

Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.

Topic 4

Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.

Topic 5

Variables, Types, and Collections: Covers declaring and initializing variables, working with strings, numbers, dates, arrays, and JSON, along with understanding type coercion and truthy
falsy evaluations.

Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q22-Q27):

NEW QUESTION # 22
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match thesearch string?

A. ' Block ' : ' none '
B. ' visible ' : ' hidden '
C. ' hidden ' : ' visible '
D. ' name ' : ' block '

Answer: A

NEW QUESTION # 23
Which statement can a developer apply to increment the browser's navigation history without a page refresh?
Which statement can a developer apply to increment the browser's navigation history without a page refresh?

A. window.history.pushStare(newStateObject, ' ', null);
B. window.history.pushState(newStateObject);
C. window.history.state.push(newStateObject);
D. window.history.replaceState(newStateObject,'', null);

Answer: D

NEW QUESTION # 24
Given the code below:

Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?

A. console.group(usersList) ;
B. console.groupCol lapsed (usersList) ;
C. console.info(usersList) ;
D. console.table(usersList) ;

Answer: A

NEW QUESTION # 25
Refer to the code below:
01 let car1 = new promise((_, reject) =>
02 setTimeout(reject, 2000, "Car 1 crashed in"));
03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, "Car 2
completed"));
04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, "Car 3
Completed"));
05 Promise.race([car1, car2, car3])
06 .then(value => (
07 let result = $(value) the race. `;
08 ))
09 .catch( arr => (
10 console.log("Race is cancelled.", err);
11 ));
What is the value of result when Promise.race executes?

A. Race is cancelled.
B. Car 2 completed the race.
C. Car 3 completed the race.
D. Car 1 crashed in the race.

Answer: B

NEW QUESTION # 26
Refer to the code declarations below:
let st=1 = 'Java';
let st=2 = 'Script';
Which three expressions return the string `JavaScript`?
Choose 3 answers

A. str=1.join(str=2);
B. const({str=1, str=2});
C. '${str=1}${str=2}';
D. str=1.cmonat(str=2);
E. str=1 + str=2;

Answer: C,D,E

NEW QUESTION # 27
......

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