Some quizzes for JavaScript quirks.

You have solved 0 quiz.show unsolved only
Sort bymost tried most accepted easiest most liked

sort: most tried

1. Promise order JavaScript Promise3703 tried
76. const JavaScript2060 tried
3. Promise then callbacks JavaScript Promise1925 tried
70. function JavaScript1651 tried
5. block scope JavaScript1601 tried
4. Promise then callbacks II JavaScript Promise1538 tried
6. Arrow Function JavaScript1509 tried
2. Promise executor JavaScript Promise1471 tried
12. arguments JavaScript1357 tried
8. Implicit Coercion I JavaScript1216 tried
7. Increment Operator JavaScript1190 tried
68. if II JavaScript1183 tried
67. if JavaScript965 tried
9. null and undefined JavaScript900 tried
10. Equal JavaScript792 tried
27. Hoisting I JavaScript757 tried
61. onClick JavaScript699 tried
69. undefined JavaScript696 tried
17. reduce JavaScript667 tried
54. setTimeout(0ms)JavaScript648 tried
73. window name JavaScript637 tried
29. Hoisting III JavaScript600 tried
65. Function name JavaScript566 tried
42. Hoisting V JavaScript564 tried
72. Array length JavaScript524 tried
23. Promise.all()JavaScript523 tried
11. Implicit Coercion II JavaScript519 tried
38. Hoisting IV JavaScript506 tried
20. name for Function expression JavaScript506 tried
28. Hoisting II JavaScript505 tried
32. Hoisting IIII JavaScript500 tried
86. setTimeout III JavaScript481 tried
21. Array I JavaScript479 tried
84. Array.prototype.sort()JavaScript477 tried
63. in JavaScript461 tried
64. reference type JavaScript456 tried
50. async await JavaScript442 tried
39. var JavaScript428 tried
41. `this` III JavaScript424 tried
55. sparse array JavaScript417 tried
13. Operator precedence JavaScript389 tried
77. parseInt 2 JavaScript385 tried
19. `this`JavaScript370 tried
74. Typed Array length JavaScript366 tried
15. instanceOf JavaScript356 tried
14. Addition vs Unary Plus JavaScript356 tried
43. JSON.stringify()JavaScript353 tried
16. parseInt JavaScript343 tried
51. method JavaScript340 tried
37. push unshift JavaScript340 tried
36. Promise.prototype.finally()JavaScript339 tried
62. MessageChannel JavaScript332 tried
22. min max JavaScript330 tried
47. Promise Order II JavaScript324 tried
60. postMessage JavaScript322 tried
45. Hoisting VI JavaScript319 tried
18. Promise executor II JavaScript312 tried
44. Function call JavaScript293 tried
33. `this` II JavaScript292 tried
25. zero JavaScript284 tried
85. String.raw() JavaScript260 tried
49. `this` IV JavaScript260 tried
26. true or false JavaScript246 tried
53. Prototype 2 JavaScript244 tried
48. Prototype JavaScript243 tried
24. Equality & Sameness JavaScript243 tried
46. Implicit Coercion IV JavaScript233 tried
59. override setter JavaScript216 tried
52. requestAnimationFrame JavaScript212 tried
81. setTimeout II JavaScript210 tried
88. try...catch JavaScript195 tried
57. non-writable JavaScript185 tried
87. instanceOf 2 JavaScript174 tried
56. to primitive JavaScript174 tried
58. inherit getter setter JavaScript168 tried
30. Equal II JavaScript163 tried
83. Plus Plus JavaScript146 tried
34. precedence JavaScript146 tried
75. meaningless calculation JavaScript143 tried
71. two-way generator JavaScript138 tried
35. Implicit Coercion III JavaScript138 tried
31. Math JavaScript135 tried
40. RegExp.prototype.test JavaScript134 tried
78. RegExp JavaScript RegExp130 tried
66. comma JavaScript122 tried
89. let JavaScript112 tried
79. Equal III JavaScript77 tried
82. Proxy II JavaScript66 tried
90. array keys JavaScript61 tried
80. Proxy I JavaScript57 tried
91. largest Array index JavaScript3 tried