JavaScript Coding Questions

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

• 1. implement curry()JavaScripteasy24350 accepted
• 3. implement Array.prototype.flat()JavaScripteasy19613 accepted
• 6. implement basic debounce()JavaScriptLodasheasy13232 accepted
• 19. find corresponding node in two identical DOM treeJavaScripteasy9198 accepted
• 11. what is Composition? create a pipe()JavaScripteasy7523 accepted
• 17. Create a simple store for DOM elementJavaScripteasy6876 accepted
• 18. Improve a functionJavaScripteasy6095 accepted
• 28. implement clearAllTimeout()JavaScripteasy5984 accepted
• 167. Intersection of unsorted arraysJavaScriptAlgorithmeasy5334 accepted
• 23. create a sum()JavaScripteasy5207 accepted
• 162. find the single integerJavaScriptAlgorithmeasy4502 accepted
• 15. implement a simple DOM wrapper to support method chaining like jQueryJavaScripteasy4250 accepted
• 25. Reorder array with new indexesJavaScriptAlgorithmeasy4066 accepted
• 155. create a count functionJavaScripteasy3986 accepted
• 159. implement promisify()JavaScripteasy3781 accepted
• 35. implement `Promise.race()`JavaScripteasy3603 accepted
• 148. create a counter objectJavaScripteasy3513 accepted
• 154. Two-way bindingJavaScriptDOMeasy3020 accepted
• 91. invert a binary treeJavaScriptAlgorithmeasy2618 accepted
• 39. implement range()JavaScripteasy2613 accepted
• 157. semver compareJavaScripteasy2456 accepted
• 89. Next Right SiblingJavaScriptDOMeasy2442 accepted
• 60. create your own `new` operatorJavaScripteasy2131 accepted
• 37. implement Binary Search (unique)JavaScripteasy2130 accepted
• 145. most frequently occurring characterJavaScripteasy2043 accepted
• 31. implement async helper - `race()`JavaScripteasy2004 accepted
• 47. reverse a linked listJavaScriptAlgorithmeasy2002 accepted
• 163. integer to roman numeralsJavaScriptAlgorithmeasy1851 accepted
• 40. implement Bubble SortJavaScriptAlgorithmeasy1793 accepted
• 118. Virtual DOM II - createElementJavaScripteasy1780 accepted
• 133. roman numerals to integerJavaScripteasy1767 accepted
• 107. Find the largest differenceJavaScriptAlgorithmeasy1619 accepted
• 81. merge sorted arraysJavaScriptAlgorithmeasy1572 accepted
• 105. find the first duplicate character in a stringJavaScriptstringeasy1572 accepted
• 121. A number sequence JavaScripteasy1552 accepted
• 138. Intersection of two sorted arraysJavaScriptAlgorithmeasy1477 accepted
• 94. implement your own `Object.create`JavaScripteasy1447 accepted
• 106. Find two numbers that sum up to 0JavaScriptAlgorithmeasy1446 accepted
• 38. implement `jest.spyOn()`JavaScripteasy1443 accepted
• 120. create `isPrime()`JavaScriptAlgorithmeasy1438 accepted
• 102. validate string of parenthesesJavaScriptAlgorithmstringeasy1418 accepted
• 48. search first index with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy1357 accepted
• 87. longest substring with unique charactersJavaScriptAlgorithmeasy1340 accepted
• 140. Virtual DOM III - Functional ComponentJavaScripteasy1309 accepted
• 54. flatten ThunkJavaScripteasy1272 accepted
• 109. implement `Math.pow()`JavaScriptAlgorithmeasy1192 accepted
• 116. implement Object.is()JavaScripteasy1188 accepted
• 49. search last index with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy1123 accepted
• 147. Pick up stonesJavaScripteasy1067 accepted
• 42. implement Insertion SortJavaScriptAlgorithmeasy1044 accepted
• 93. Generate Fibonacci Number with recursionJavaScripteasy1042 accepted
• 100. detect circle in linked listJavaScriptAlgorithmeasy1037 accepted
• 44. implement Selection SortJavaScriptAlgorithmeasy908 accepted
• 50. search element right before target with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy896 accepted
• 51. search element right after target with Binary Search(possible duplicate array)JavaScriptAlgorithmeasy802 accepted
• 96. count "1" in binary formJavaScripteasy764 accepted
• 62. implement BigInt additionJavaScriptAlgorithmeasy723 accepted
• 142. lit-html 1 - tagged templatesJavaScriptlit-htmleasy645 accepted
• 72. implement Observable interval()JavaScripteasy434 accepted
• 74. implement Observable Transformation OperatorsJavaScripteasy405 accepted
• 73. implement Observable fromEvent()JavaScripteasy384 accepted
• 141. implement btoa()JavaScripteasy251 accepted