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https://github.com/adrinlol/linkedin-javascript-assessment
LinkedIn JavaScript Assessment Answers - 2019-2021
https://github.com/adrinlol/linkedin-javascript-assessment
assessment-test javascript-answers javascript-questions javascript-quiz javascript-test javascript-tests linkedin-assessment linkedin-test
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LinkedIn JavaScript Assessment Answers - 2019-2021
- Host: GitHub
- URL: https://github.com/adrinlol/linkedin-javascript-assessment
- Owner: Adrinlol
- Created: 2019-07-19T08:35:07.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2021-11-10T21:27:43.000Z (about 3 years ago)
- Last Synced: 2024-05-21T02:15:17.045Z (8 months ago)
- Topics: assessment-test, javascript-answers, javascript-questions, javascript-quiz, javascript-test, javascript-tests, linkedin-assessment, linkedin-test
- Homepage:
- Size: 38.1 KB
- Stars: 106
- Watchers: 6
- Forks: 32
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
Awesome Lists containing this project
README
## LinkedIn JavaScript Assessment
LinkedIn Assessments - JavaScript 2019-2021
## Overview
#### Answer 15-20 timed, multiple-choice questions
- ~15 minutes duration
- 70th percentile required to pass and get a badge
- Retry in 3 months if you don’t pass
----------------------------------------------------------
#### Q1. You've written the event listener shown below for a form button, but each time you click the button, the page reloads. Which statement would stop this from happening?
```javascript
button.addEventListener('click', function(e) {
button.className = 'clicked';
}, false);
```
- e.preventDefault();
----------------------------------------------------------
#### Q2. Which statement references the DOM node created by the code shown?
```
Lorem Ipsum
```
- document.querySelector(".pull");
----------------------------------------------------------
#### Q3. Which statement is the correct way to create a variable called rate and assign it the value 100?
```javascript
let rate = 100;
```
----------------------------------------------------------
#### Q4. When would the final statement in the code shown be logged to the console?
```javascript
let modal = document.querySelector('#results');
setTimeout(function() {
modal.classList.remove('hidden');
}, 10000);
console.log('Results shown');
```
- Immediately
----------------------------------------------------------
#### Q5. Which statement creates a new object using the Person constructor?
- var student = new Person();
----------------------------------------------------------
#### Q6. When would you use a conditional statement?
- When you want your code to choose between multiple options.
----------------------------------------------------------
#### Q7. How is forEach statement different from a for statement?
- A for statement is generic but a forEach statement can be used only with an array.
----------------------------------------------------------
#### Q8. Review the code below. Which statement calls the addTax function and passes 50 as the argument?
```javascript
addTax(50);
```
----------------------------------------------------------
#### Q9. What is the result in the console of running the code shown?
```javascript
var Storm = function () {};
Storm.prototype.precip = 'rain';
var WinterStorm = function () {};
WinterStorm.prototype = new Storm();
WinterStorm.prototype.precip = 'snow';
var bob = new WinterStorm();
console.log(bob.precip);
```
- 'snow'
----------------------------------------------------------
#### Q10. How does a function create a closure?
- It returns a reference to a variable in its parent scope.
----------------------------------------------------------
#### Q11. What is the result in the console of running this code?
```javascript
"use strict";
function logThis() {
this.desc="logger";
console.log(this);
}
new logThis();
```
- logThis { desc: 'logger' }
----------------------------------------------------------
#### Q12. What is the result of running this statement?
```javascript
console.log(typeof(42));
```
- 'Number'
----------------------------------------------------------
#### Q13. Which operator returns true if the two compared values are not equal?
- !==
----------------------------------------------------------
#### Q14. Which statement is the correct way to create a variable called rate and assign it the value 100?
```javascript
let rate = 100;
```
----------------------------------------------------------
#### Q15. Which statement creates a new object using the Person constructor?
```javascript
var student = new Person();
```
----------------------------------------------------------
#### Q16. How would you reference the text 'avenue' in the code shown?
```javascript
roadTypes[2]
```
----------------------------------------------------------
#### Q17. Which property references the DOM object that dispatched an event?
- target
----------------------------------------------------------
#### Q18. Which method converts JSON data to a JavaScript object?
```javascript
JSON.parse()
```
----------------------------------------------------------
#### Q19. When would you use a conditional statement?
- When you want your code to choose between multiple options
----------------------------------------------------------
#### Q20. What would be the result in the console of running this code?
```javascript
for(var i=0; i<5; i++){
console.log(i);
}
```
- 01234
----------------------------------------------------------
#### Q21. What is the name of a function whose execution can be suspended and resumed at a later point?
- Generator
----------------------------------------------------------
#### Q22. You've written the code shown to log a set of consecutive values, but it instead results in the value 5, 5, 5, and 5 being logged to the console. Which revised version of the code would result in the value 1, 2, 3 and 4 being logged?
```javascript
for (var i=1; i<=4; i++){
setTimeout(function(){
console.log(i);
}, i*10000);
}
```
- ```for (var i = 1; i <= 4; i++) {{function(j) {setTimeout(function() {console.log(j);}, j * 1000);})(i)};```
----------------------------------------------------------
#### Q23. Which statement creates a new function called discountPrice?
- ```let discountPrice = function(price) { return price * 0.85; };```
----------------------------------------------------------
#### Q24. You need to match a time value such as 12:00:32. Which of the following regular expressions would work for your code?
- /\d\d:\d\d:\d\d/
----------------------------------------------------------
#### Q25. How many prototype objects are in the chain for the following array?
```javascript
let arr = [];
```
- 2
----------------------------------------------------------
#### Q26. Which of the following is not a unary operator?
- instanceof
----------------------------------------------------------
#### Q27. What type of scope does the end variable have in the code shown?
```javascript
var start = 1;
if (start === 1) {
let end = 2;
}
```
- block
----------------------------------------------------------
#### Q28. What will the value of y be in this code:
```javascript
const x = 6 % 2;
const y = x ? 'One': 'Two';
```
- Two
----------------------------------------------------------
#### Q29. Which keyword is used to create an error?
- throw
----------------------------------------------------------
#### Q30. What's one difference between the async and defer attributes of the HTML script tag?
- The defer attribute will asynchronously load the scripts in order
----------------------------------------------------------
#### Q31. The following program has a problem. What is it?
```javascript
var a;
var b = (a = 3) ? true: false
```
- The condition in the ternary is using the assignment operator.
----------------------------------------------------------
#### Q32. Which statement references the DOM node created by the code shown?
```javascript
lorem ipsum
```
- ```document.querySelector('.pull');```
----------------------------------------------------------
#### Q33. What value does the code return?
```javascript
let answer = true;
if (answer === false) {
return 0;
} else {
return 10;
}
```
- 10
----------------------------------------------------------
#### Q34. What is the result in the console of running the code shown?
```javascript
var start = 1;
function setEnd() {
var end = 10;
}
setEnd();
console.log(end);
```
- ReferenceError
----------------------------------------------------------
#### Q35. What will this code log in the console?
```javascript
function sayHello() {
console.log("hello");
}
console.log(sayHello.prototype);
```
- undefined
----------------------------------------------------------
#### Q36. Which collection object allows unique value to be inserted only once?
- Set
----------------------------------------------------------
#### Q37. The following program has a problem. What is it?
```javascript
var a;
var b = (a = 3) ? true: false
```
- The condition in the ternary is using the assignment operator.
----------------------------------------------------------
#### Q38. For the following class, how do you geet value of 42 from `x`?
```javascript
class X{
get Y(){return 42;}
}
var x = new X();
```
- x.Y
----------------------------------------------------------
#### Q39. What is the result?
```javascript
sum(10,20);
diff(10,20);
function sum(x,y){
return x+y;
}
let diff = function(x,y){
return x-y;
}
```
- ReferenceError
----------------------------------------------------------
#### Q40. Which variable is an implicit parameter for every function in JavaScript?
- Arguments
----------------------------------------------------------
#### Q41. What does the following expression evaluate to?
```javascript
[] == [];
```
- False
----------------------------------------------------------
#### Q42. Which statement is true about Functional Programming?
- Side effects are not allowed.
----------------------------------------------------------
#### Q43. Which choice is not a unary operator?
- instanceof
----------------------------------------------------------
#### Q44. What will the value of y be in this code:
```javascript
const x = 6 % 2;
const y = x ? 'One' : 'Two';
```
- Two
----------------------------------------------------------
#### Q45. What value does this code return?
```javascript
let answer = true;
if (answer === false) {
return 0;
} else {
return 10;
}
```
- 10
----------------------------------------------------------
#### Q46. What two values will this code print?
```javascript
function printA() {
console.log(answer);
var answer = 1;
}
printA();
printA();
```
- undefined then undefined
----------------------------------------------------------
#### Q47. Why might you choose to make your code asynchronous?
- to start tasks that might take some time without blocking subsequent tasks from executing immediately