Some quizzes for JavaScript quirks.

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1. Promise order JavaScript Promise easy61 likes
3. Promise then callbacks JavaScript Promise easy35 likes
6. Arrow Function JavaScript medium30 likes
4. Promise then callbacks II JavaScript Promise easy26 likes
5. block scope JavaScript easy24 likes
2. Promise executor JavaScript Promise easy23 likes
19. `this`JavaScript easy18 likes
7. Increment Operator JavaScript easy17 likes
8. Implicit Coercion I JavaScript easy14 likes
69. undefined JavaScript easy11 likes
36. Promise.prototype.finally()JavaScript easy10 likes
21. Array I JavaScript medium10 likes
12. arguments JavaScript medium10 likes
9. null and undefined JavaScript medium10 likes
86. setTimeout III JavaScript easy9 likes
76. const JavaScript hard?9 likes
45. Hoisting VI JavaScript easy9 likes
70. function JavaScript easy8 likes
61. onClick JavaScript easy8 likes
46. Implicit Coercion IV JavaScript easy8 likes
41. `this` III JavaScript easy8 likes
24. Equality & Sameness JavaScript easy8 likes
17. reduce JavaScript medium8 likes
72. Array length JavaScript easy7 likes
42. Hoisting V JavaScript medium7 likes
29. Hoisting III JavaScript easy7 likes
23. Promise.all()JavaScript easy7 likes
18. Promise executor II JavaScript easy7 likes
11. Implicit Coercion II JavaScript easy7 likes
92. NaN JavaScript easy6 likes
68. if II JavaScript medium6 likes
48. Prototype JavaScript easy6 likes
47. Promise Order II JavaScript easy6 likes
27. Hoisting I JavaScript easy6 likes
20. name for Function expression JavaScript medium6 likes
15. instanceOf JavaScript easy6 likes
97. `this` V JavaScript easy5 likes
73. window name JavaScript medium5 likes
60. postMessage JavaScript easy5 likes
58. inherit getter setter JavaScript easy5 likes
38. Hoisting IV JavaScript easy5 likes
33. `this` II JavaScript easy5 likes
32. Hoisting IIII JavaScript medium5 likes
16. parseInt JavaScript easy5 likes
14. Addition vs Unary Plus JavaScript easy5 likes
13. Operator precedence JavaScript easy5 likes
10. Equal JavaScript easy5 likes
83. Plus Plus JavaScript easy4 likes
64. reference type JavaScript easy4 likes
59. override setter JavaScript easy4 likes
54. setTimeout(0ms)JavaScript easy4 likes
28. Hoisting II JavaScript easy4 likes
22. min max JavaScript easy4 likes
95. number format JavaScript easy3 likes
94. emoji JavaScript easy3 likes
93. string JavaScript easy3 likes
89. let JavaScript easy3 likes
88. try...catch JavaScript medium3 likes
75. meaningless calculation JavaScript easy3 likes
71. two-way generator JavaScript easy3 likes
67. if JavaScript medium3 likes
66. comma JavaScript easy3 likes
63. in JavaScript easy3 likes
62. MessageChannel JavaScript easy3 likes
57. non-writable JavaScript easy3 likes
56. to primitive JavaScript medium3 likes
52. requestAnimationFrame JavaScript easy3 likes
51. method JavaScript medium3 likes
50. async await JavaScript easy3 likes
49. `this` IV JavaScript easy3 likes
39. var JavaScript easy3 likes
34. precedence JavaScript easy3 likes
30. Equal II JavaScript easy3 likes
96. comparison JavaScript easy2 likes
87. instanceOf 2 JavaScript easy2 likes
84. Array.prototype.sort()JavaScript medium2 likes
82. Proxy II JavaScript medium2 likes
81. setTimeout II JavaScript easy2 likes
80. Proxy I JavaScript easy2 likes
78. RegExp JavaScript RegExp medium2 likes
77. parseInt 2 JavaScript easy2 likes
55. sparse array JavaScript medium2 likes
44. Function call JavaScript easy2 likes
43. JSON.stringify()JavaScript medium2 likes
37. push unshift JavaScript easy2 likes
35. Implicit Coercion III JavaScript easy2 likes
31. Math JavaScript easy2 likes
26. true or false JavaScript easy2 likes
25. zero JavaScript medium2 likes
91. largest Array index JavaScript easy1 likes
79. Equal III JavaScript easy1 likes
74. Typed Array length JavaScript easy1 likes
65. Function name JavaScript easy1 likes
53. Prototype 2 JavaScript easy1 likes
40. RegExp.prototype.test JavaScript easy1 likes
90. array keys JavaScript medium
85. String.raw() JavaScript medium