JavaScript Developer I V1

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

Refer to the following code block: What is the console output?A . > Better student Jackie got 70% on test. B. > Jackie got 70% on test. C. > Uncaught Reference Error D. > Better student Jackie got 100% on test.View AnswerAnswer: D

A developer is setting up a Node,js server and is creating a script at the root of the source code, index,js, that will start the server when executed. The developer declares a variable that needs the folder location that the code executes from. Which global variable can be used in...

Refer to the following array: Let arr1 = [ 1, 2, 3, 4, 5 ]; Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?A . Let arr2 = arr1.slice(0, 5); B. Let arr2 = Array.from(arr1); C. Let...

A developer writes the code below to calculate the factorial of a given number function sum(number) { return number * sum(number-1); } sum (3); what is the result of executing the code?A . 0 B. 6 C. Error D. -InfinityView AnswerAnswer: C

Refer to the code below: function foo () { const a =2; function bat() { console.log(a); } return bar; } Why does the function bar have access to variable a?A . Inner function’s scope B. Hoisting C. Outer function’s scope D. Prototype chainView AnswerAnswer: C