JavaScript Developer I exam

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 answerA . [ ].concat(...inArray); B. [ ].concat.apply(inArray,[ ]); C. [ ].concat([...inArray]) D. [ ].concat.apply([ ],inArray);View AnswerAnswer: A,D

There is a new requirement for a developer to implement a currPrice method that will return the current price of the item or sales. What is the output when executing the code above?A . 50 Uncaught TypeError: saleItem,desrcription is not a function 50 80 B. 50 80 50 72 C....

A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes. A different developer made changes to the behavior of sum3 to instead sum only the first...

Consider type coercion, what does the following expression evaluate to? True + 3 + ‘100’ + nullA . 104 B. 4100 C. ‘3100null’ D. ‘4100null’View AnswerAnswer: D

A developer writers the code below to calculate the factorial of a given number. Function factorial(number) { Return number + factorial(number -1); } factorial(3); What is the result of executing line 04?A . 0 B. 6 C. -Infinity D. RuntimeErrorView AnswerAnswer: D

At Universal Containers, every team has its own way of copying JavaScript objects. The code snippet shows an Implementation from one team: What is the output of the code execution?A . Hello John Doe B. Hello Dan C. Hello Dan Doe D. SyntaxError: Unexpected token in JSONView AnswerAnswer: D

Refer to the code declarations below: Which three expressions return the string JavaScript? Choose 3 answersA . Str1.join (str2); B. Str1.concat (str2); C. Concat (str1, str2); D. $(str1) $ (str2} ‘; E. Str1 + str2;View AnswerAnswer: B,D,E

Which two code snippets show working examples of a recursive function? Choose 2 answersA . Let countingDown = function(startNumber) { If ( startNumber >0) { console.log(startNumber) ; return countingDown(startNUmber); } else { return startNumber; }}; B. Function factorial ( numVar ) { If (numVar < 0) return; If ( numVar...

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?A . 01 let monthName =’July’; B. 02...

A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented. 01 function logStatus(status){ 02 console./*Answer goes here*/{‘Item status is: %s’, status}; 03 } Which three console logging methods allow the use of string substitution in line 02?A . Assert...