JavaScript Developer I exam

Cloud Kicks has a class to represent items for sale in an online store, as shown below: Class Item{ constructor (name, price){ this.name = name; this.price = price; } formattedPrice(){ return ‘s’ + String(this.price);}} A new business requirement comes in that requests a ClothingItem class that should have all of...

Which statement accurately describes the behaviour of the async/ await keyworks?A . The associated class contains some asynchronous functions. B. The associated function will always return a promise C. The associated function can only be called via asynchronous methods D. The associated sometimes returns a promise.View AnswerAnswer: B

Refer to the code below: After running this code, which result is displayed on the console?A . > true > false B. > 5 >undefined B. > 5 > -1 C. > 5 > 0View AnswerAnswer: B

Refer to the code below: function changeValue(param) { Param =5; } Let a =10; Let b =5; changeValue(b); Const result = a+ “ - ”+ b; What is the value of result when code executes?A . 10 -10 B. 5 -5 C. 5 - 10 D. 10 - 5View AnswerAnswer:...

A developer wrote the following code: 01 let X = object.value; 02 03 try { 4 handleObjectValue(X); 5 } catch (error) { 6 handleError(error); 7 } The developer has a getNextValue function to execute after handleObjectValue(), but does not want to execute getNextValue() if an error occurs. How can the...

The developer has a function that prints “Hello” to an input name. To test this, thedeveloper created a function that returns “World”. However the following snippet does not print “ Hello World”. What can the developer do to change the code to print “Hello World”?A . Change line 7 to...

A developer needs to test this function: 01 const sum3 = (arr) => ( 02 if (!arr.length) return 0, 03 if (arr.length === 1) return arr[0], 04 if (arr.length === 2) return arr[0] + arr[1], 05 return arr[0] + arr[1] + arr[2], 06 ); Which two assert statements are valid...

Refer to code below: function Person() { this.firstName = ’John’; } Person.prototype ={ Job: x => ‘Developer’ }; const myFather = new Person(); const result =myFather.firstName + ‘ ‘ + myFather.job(); What is the value of the result after line 10 executes?A . Error: myFather.job is not a function B....

myArraym can have one level, two levels, or more levels. Which statement flattens myArray when it can be arbitrarily nested?A . myArray. reduce ((prev, curr) => prev.concat(curr) [ ]); B. myArray. join (","). split (","); C. [ ] .concat {. . .myArray) ; D. myArray.flat(Infinity);View AnswerAnswer: A

Given the JavaScript below: Which code should replace the placeholder comment on line 05 to highlight accounts that match the search string'A . 'yellow' : null B. null : 'yellow’ C. 'none1 : "yellow’ D. 'yellow : 'none'View AnswerAnswer: D