JavaScript Coding Questions

As a Front-End developer, JavaScript is the core skill of everything

• 1. implement curry()JavaScripteasy27809 accepted
• 6. implement basic debounce()JavaScriptLodasheasy15103 accepted
• 19. find corresponding node in two identical DOM treeJavaScripteasy9931 accepted
• 11. what is Composition? create a pipe()JavaScripteasy8530 accepted
• 17. Create a simple store for DOM elementJavaScripteasy7587 accepted
• 18. Improve a functionJavaScripteasy6770 accepted
• 28. implement clearAllTimeout()JavaScripteasy6556 accepted
• 8. can you shuffle() an array?JavaScripteasy6350 accepted
• 167. Intersection of unsorted arraysJavaScriptAlgorithmeasy5493 accepted
• 15. implement a simple DOM wrapper to support method chaining like jQueryJavaScripteasy4679 accepted
• 162. find the single integerJavaScriptAlgorithmeasy4642 accepted
• 25. Reorder array with new indexesJavaScriptAlgorithmeasy4591 accepted
• 155. create a count functionJavaScripteasy4136 accepted
• 35. implement `Promise.race()`JavaScripteasy4008 accepted
• 159. implement promisify()JavaScripteasy3980 accepted
• 148. create a counter objectJavaScripteasy3692 accepted
• 154. Two-way bindingJavaScriptDOMeasy3135 accepted
• 39. implement range()JavaScripteasy2835 accepted
• 91. invert a binary treeJavaScriptAlgorithmeasy2762 accepted
• 89. Next Right SiblingJavaScriptDOMeasy2548 accepted
• 157. semver compareJavaScripteasy2531 accepted
• 37. implement Binary Search (unique)JavaScripteasy2396 accepted
• 60. create your own `new` operatorJavaScripteasy2280 accepted
• 31. implement async helper - `race()`JavaScripteasy2233 accepted
• 47. reverse a linked listJavaScriptAlgorithmeasy2165 accepted
• 145. most frequently occurring characterJavaScripteasy2125 accepted
• 40. implement Bubble SortJavaScriptAlgorithmeasy2005 accepted
• 118. Virtual DOM II - createElementJavaScripteasy1936 accepted
• 133. roman numerals to integerJavaScripteasy1935 accepted
• 163. integer to roman numeralsJavaScriptAlgorithmeasy1902 accepted
• 81. merge sorted arraysJavaScriptAlgorithmeasy1719 accepted
• 107. Find the largest differenceJavaScriptAlgorithmeasy1714 accepted
• 121. A number sequence JavaScripteasy1713 accepted
• 105. find the first duplicate character in a stringJavaScriptstringeasy1699 accepted
• 38. implement `jest.spyOn()`JavaScripteasy1582 accepted
• 106. Find two numbers that sum up to 0JavaScriptAlgorithmeasy1559 accepted
• 120. create `isPrime()`JavaScriptAlgorithmeasy1538 accepted
• 102. validate string of parenthesesJavaScriptAlgorithmstringeasy1536 accepted
• 138. Intersection of two sorted arraysJavaScriptAlgorithmeasy1536 accepted
• 94. implement your own `Object.create`JavaScripteasy1529 accepted
• 48. search first index with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy1517 accepted
• 87. longest substring with unique charactersJavaScriptAlgorithmeasy1451 accepted
• 140. Virtual DOM III - Functional ComponentJavaScripteasy1435 accepted
• 54. flatten ThunkJavaScripteasy1379 accepted
• 97. compress a stringJavaScriptstringeasy1377 accepted
• 109. implement `Math.pow()`JavaScriptAlgorithmeasy1268 accepted
• 116. implement Object.is()JavaScripteasy1265 accepted
• 49. search last index with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy1242 accepted
• 42. implement Insertion SortJavaScriptAlgorithmeasy1168 accepted
• 147. Pick up stonesJavaScripteasy1150 accepted
• 93. Generate Fibonacci Number with recursionJavaScripteasy1132 accepted
• 100. detect circle in linked listJavaScriptAlgorithmeasy1123 accepted
• 44. implement Selection SortJavaScriptAlgorithmeasy1019 accepted
• 50. search element right before target with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy1009 accepted
• 51. search element right after target with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy885 accepted
• 96. count "1" in binary formJavaScripteasy820 accepted
• 62. implement BigInt additionJavaScriptAlgorithmeasy795 accepted
• 142. lit-html 1 - tagged templatesJavaScriptlit-htmleasy668 accepted
• 72. implement Observable interval()JavaScripteasy454 accepted
• 74. implement Observable Transformation OperatorsJavaScripteasy419 accepted
• 73. implement Observable fromEvent()JavaScripteasy399 accepted
• 141. implement btoa()JavaScripteasy262 accepted