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中
刷题练习
发现
中
JavaScript 小测验
测试你对JavaScript这一门语言本身的掌握情况。
排序
难度
解答状态
排序: 最多被尝试
1. Promise order
JavaScript
Promise
容易
14754 tried
3. Promise then callbacks
JavaScript
Promise
容易
7692 tried
4. Promise then callbacks II
JavaScript
Promise
容易
7010 tried
2. Promise executor
JavaScript
Promise
容易
6839 tried
5. scope
JavaScript
容易
6477 tried
6. Arrow Function
JavaScript
中等难度
5619 tried
76. const
JavaScript
有点难?
5582 tried
12. arguments
JavaScript
中等难度
5433 tried
8. Implicit Coercion I
JavaScript
容易
5370 tried
7. Increment Operator
JavaScript
容易
5113 tried
9. null and undefined
JavaScript
中等难度
3693 tried
10. Equal
JavaScript
容易
3616 tried
97. `this` V
JavaScript
容易
2999 tried
93. string
JavaScript
容易
2979 tried
70. function
JavaScript
容易
2596 tried
27. Hoisting I
JavaScript
容易
2541 tried
11. Implicit Coercion II
JavaScript
容易
2469 tried
17. reduce
JavaScript
中等难度
2460 tried
19. `this`
JavaScript
容易
2211 tried
29. Hoisting III
JavaScript
容易
2064 tried
68. if II
JavaScript
中等难度
2053 tried
67. if
JavaScript
中等难度
2016 tried
21. Array I
JavaScript
中等难度
1959 tried
20. name for Function expression
JavaScript
中等难度
1844 tried
14. Addition vs Unary Plus
JavaScript
容易
1777 tried
13. Operator precedence
JavaScript
容易
1750 tried
113. push
JavaScript
中等难度
1741 tried
86. setTimeout III
JavaScript
容易
1729 tried
28. Hoisting II
JavaScript
容易
1711 tried
117. `this` VII
JavaScript
容易
1706 tried
120. try..catch..finally
JavaScript
容易
1674 tried
89. let
JavaScript
容易
1651 tried
84. Array.prototype.sort()
JavaScript
中等难度
1649 tried
69. undefined
JavaScript
容易
1640 tried
41. `this` III
JavaScript
容易
1620 tried
23. Promise.all()
JavaScript
容易
1598 tried
15. instanceOf
JavaScript
容易
1588 tried
61. onClick
JavaScript
容易
1581 tried
38. Hoisting IV
JavaScript
容易
1565 tried
16. parseInt
JavaScript
容易
1555 tried
88. try...catch
JavaScript
容易
1506 tried
96. comparison
JavaScript
容易
1486 tried
42. Hoisting V
JavaScript
中等难度
1461 tried
81. setTimeout II
JavaScript
容易
1454 tried
32. Hoisting IIII
JavaScript
容易
1443 tried
47. Promise Order II
JavaScript
容易
1409 tried
50. async await
JavaScript
容易
1370 tried
54. setTimeout(0ms)
JavaScript
容易
1355 tried
94. emoji
JavaScript
容易
1350 tried
36. Promise.prototype.finally()
JavaScript
容易
1349 tried
72. Array length
JavaScript
容易
1348 tried
39. var
JavaScript
容易
1327 tried
18. Promise executor II
JavaScript
容易
1325 tried
114. constructor
JavaScript
容易
1324 tried
92. NaN
JavaScript
容易
1305 tried
95. number format
JavaScript
容易
1285 tried
116. strict
JavaScript
容易
1256 tried
100. `var` vs `let`
JavaScript
容易
1230 tried
73. window name
JavaScript
中等难度
1199 tried
33. `this` II
JavaScript
容易
1179 tried
22. min max
JavaScript
容易
1173 tried
65. Function name
JavaScript
容易
1172 tried
43. JSON.stringify()
JavaScript
中等难度
1147 tried
55. sparse array
JavaScript
中等难度
1118 tried
45. Hoisting VI
JavaScript
容易
1100 tried
49. `this` IV
JavaScript
容易
1098 tried
25. zero
JavaScript
容易
1026 tried
123. return in Generator 2
JavaScript
容易
1019 tried
91. largest Array index
JavaScript
容易
1011 tried
63. in
JavaScript
容易
980 tried
37. push unshift
JavaScript
容易
980 tried
90. array keys
JavaScript
中等难度
978 tried
26. true or false
JavaScript
容易
962 tried
51. method
JavaScript
中等难度
961 tried
87. instanceOf 2
JavaScript
容易
956 tried
99. closure
JavaScript
容易
949 tried
124. comma 2
JavaScript
容易
946 tried
24. Equality & Sameness
JavaScript
容易
930 tried
64. reference type
JavaScript
容易
927 tried
44. Function call
JavaScript
容易
913 tried
98. Promise executor IV
Promise
容易
905 tried
111. falsy
JavaScript
容易
892 tried
109. isNaN()
JavaScript
容易
892 tried
79. Equal III
JavaScript
容易
892 tried
103. Promise Order III
JavaScript
容易
885 tried
48. Prototype
JavaScript
容易
878 tried
115. parseInt II
JavaScript
容易
867 tried
46. Implicit Coercion IV
JavaScript
容易
856 tried
107. `this` VI
JavaScript
容易
844 tried
105. typeof
JavaScript
容易
844 tried
60. postMessage
JavaScript
容易
838 tried
122. Iterable
JavaScript
容易
830 tried
30. Equal II
JavaScript
容易
809 tried
83. Plus Plus
JavaScript
容易
798 tried
108. property key
JavaScript
容易
792 tried
102. Arrow Function II
JavaScript
容易
773 tried
74. Typed Array length
JavaScript
容易
763 tried
53. Prototype 2
JavaScript
容易
760 tried
106. Promise.all() II
JavaScript
容易
758 tried
77. parseInt 2
JavaScript
容易
747 tried
118. structuredClone()
JavaScript
容易
731 tried
62. MessageChannel
JavaScript
容易
723 tried
85. String.raw()
JavaScript
中等难度
679 tried
52. requestAnimationFrame
JavaScript
容易
655 tried
121. Generator return()
JavaScript
中等难度
643 tried
126. Object.keys()
JavaScript
中等难度
642 tried
34. precedence
JavaScript
容易
638 tried
78. RegExp
JavaScript
RegExp
中等难度
623 tried
112. Symbol
JavaScript
容易
615 tried
56. to primitive
JavaScript
容易
613 tried
31. Math
JavaScript
容易
604 tried
35. Implicit Coercion III
JavaScript
容易
556 tried
110. yield
JavaScript
容易
552 tried
66. comma
JavaScript
容易
549 tried
59. override setter
JavaScript
容易
536 tried
57. non-writable
JavaScript
容易
535 tried
101. Equal IV
JavaScript
容易
534 tried
82. Proxy II
JavaScript
容易
504 tried
104. Inheritance
JavaScript
容易
502 tried
80. Proxy I
JavaScript
容易
486 tried
119. return in Generator
JavaScript
中等难度
477 tried
40. RegExp.prototype.test
JavaScript
容易
472 tried
58. inherit getter setter
JavaScript
容易
456 tried
71. two-way generator
JavaScript
容易
399 tried
75. meaningless calculation
JavaScript
容易
393 tried
125. try...catch...finally 2
JavaScript
中等难度
346 tried
130. async
JavaScript
容易
186 tried
128. setTimeout IV
JavaScript
中等难度
177 tried
127. JSON.stringify() II
JavaScript
中等难度
121 tried
129. Function II
JavaScript
没多少人挑战
31 tried