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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: 最多通过
1. Promise order
JavaScript
Promise
容易
4992 accepted
2. Promise executor
JavaScript
Promise
容易
4492 accepted
3. Promise then callbacks
JavaScript
Promise
容易
3238 accepted
5. scope
JavaScript
容易
2849 accepted
4. Promise then callbacks II
JavaScript
Promise
容易
2319 accepted
7. Increment Operator
JavaScript
容易
2314 accepted
8. Implicit Coercion I
JavaScript
容易
1771 accepted
6. Arrow Function
JavaScript
中等难度
1542 accepted
10. Equal
JavaScript
容易
1408 accepted
93. string
JavaScript
容易
1138 accepted
9. null and undefined
JavaScript
中等难度
1133 accepted
69. undefined
JavaScript
容易
1050 accepted
97. `this` V
JavaScript
容易
1025 accepted
12. arguments
JavaScript
中等难度
1015 accepted
13. Operator precedence
JavaScript
容易
1005 accepted
89. let
JavaScript
容易
991 accepted
27. Hoisting I
JavaScript
容易
985 accepted
28. Hoisting II
JavaScript
容易
869 accepted
70. function
JavaScript
容易
856 accepted
86. setTimeout III
JavaScript
容易
851 accepted
11. Implicit Coercion II
JavaScript
容易
798 accepted
29. Hoisting III
JavaScript
容易
795 accepted
39. var
JavaScript
容易
758 accepted
17. reduce
JavaScript
中等难度
754 accepted
19. `this`
JavaScript
容易
745 accepted
23. Promise.all()
JavaScript
容易
687 accepted
18. Promise executor II
JavaScript
容易
685 accepted
96. comparison
JavaScript
容易
674 accepted
41. `this` III
JavaScript
容易
671 accepted
99. closure
JavaScript
容易
653 accepted
79. Equal III
JavaScript
容易
653 accepted
61. onClick
JavaScript
容易
641 accepted
45. Hoisting VI
JavaScript
容易
622 accepted
67. if
JavaScript
容易
614 accepted
100. `var` vs `let`
JavaScript
容易
607 accepted
94. emoji
JavaScript
容易
606 accepted
15. instanceOf
JavaScript
容易
606 accepted
54. setTimeout(0ms)
JavaScript
容易
604 accepted
14. Addition vs Unary Plus
JavaScript
容易
592 accepted
38. Hoisting IV
JavaScript
容易
588 accepted
120. try..catch..finally
JavaScript
容易
583 accepted
37. push unshift
JavaScript
容易
578 accepted
63. in
JavaScript
容易
574 accepted
33. `this` II
JavaScript
容易
572 accepted
105. typeof
JavaScript
容易
571 accepted
117. `this` VII
JavaScript
容易
567 accepted
111. falsy
JavaScript
容易
562 accepted
47. Promise Order II
JavaScript
容易
560 accepted
76. const
JavaScript
有点难?
550 accepted
44. Function call
JavaScript
容易
544 accepted
81. setTimeout II
JavaScript
容易
543 accepted
113. push
JavaScript
中等难度
533 accepted
16. parseInt
JavaScript
容易
533 accepted
46. Implicit Coercion IV
JavaScript
容易
531 accepted
22. min max
JavaScript
容易
531 accepted
124. comma 2
JavaScript
容易
529 accepted
65. Function name
JavaScript
容易
525 accepted
91. largest Array index
JavaScript
容易
513 accepted
107. `this` VI
JavaScript
容易
508 accepted
72. Array length
JavaScript
容易
504 accepted
49. `this` IV
JavaScript
容易
495 accepted
68. if II
JavaScript
中等难度
492 accepted
92. NaN
JavaScript
容易
489 accepted
95. number format
JavaScript
容易
470 accepted
88. try...catch
JavaScript
容易
470 accepted
32. Hoisting IIII
JavaScript
容易
465 accepted
50. async await
JavaScript
容易
462 accepted
21. Array I
JavaScript
中等难度
462 accepted
36. Promise.prototype.finally()
JavaScript
容易
452 accepted
24. Equality & Sameness
JavaScript
容易
445 accepted
20. name for Function expression
JavaScript
中等难度
440 accepted
114. constructor
JavaScript
容易
438 accepted
115. parseInt II
JavaScript
容易
433 accepted
48. Prototype
JavaScript
容易
432 accepted
53. Prototype 2
JavaScript
容易
430 accepted
84. Array.prototype.sort()
JavaScript
中等难度
429 accepted
74. Typed Array length
JavaScript
容易
423 accepted
26. true or false
JavaScript
容易
422 accepted
116. strict
JavaScript
容易
419 accepted
103. Promise Order III
JavaScript
容易
418 accepted
106. Promise.all() II
JavaScript
容易
406 accepted
109. isNaN()
JavaScript
容易
401 accepted
123. return in Generator 2
JavaScript
容易
389 accepted
34. precedence
JavaScript
容易
382 accepted
87. instanceOf 2
JavaScript
容易
371 accepted
122. Iterable
JavaScript
容易
368 accepted
42. Hoisting V
JavaScript
中等难度
367 accepted
98. Promise executor IV
Promise
容易
366 accepted
102. Arrow Function II
JavaScript
容易
359 accepted
108. property key
JavaScript
容易
341 accepted
64. reference type
JavaScript
容易
339 accepted
60. postMessage
JavaScript
容易
338 accepted
25. zero
JavaScript
容易
337 accepted
30. Equal II
JavaScript
容易
335 accepted
101. Equal IV
JavaScript
容易
322 accepted
66. comma
JavaScript
容易
320 accepted
104. Inheritance
JavaScript
容易
319 accepted
59. override setter
JavaScript
容易
311 accepted
112. Symbol
JavaScript
容易
305 accepted
31. Math
JavaScript
容易
295 accepted
43. JSON.stringify()
JavaScript
中等难度
293 accepted
40. RegExp.prototype.test
JavaScript
容易
287 accepted
62. MessageChannel
JavaScript
容易
282 accepted
83. Plus Plus
JavaScript
容易
279 accepted
57. non-writable
JavaScript
容易
278 accepted
77. parseInt 2
JavaScript
容易
260 accepted
52. requestAnimationFrame
JavaScript
容易
259 accepted
118. structuredClone()
JavaScript
容易
251 accepted
73. window name
JavaScript
中等难度
244 accepted
90. array keys
JavaScript
中等难度
239 accepted
55. sparse array
JavaScript
中等难度
236 accepted
71. two-way generator
JavaScript
容易
231 accepted
35. Implicit Coercion III
JavaScript
容易
226 accepted
110. yield
JavaScript
容易
223 accepted
58. inherit getter setter
JavaScript
容易
218 accepted
56. to primitive
JavaScript
容易
211 accepted
75. meaningless calculation
JavaScript
容易
208 accepted
85. String.raw()
JavaScript
中等难度
199 accepted
51. method
JavaScript
中等难度
198 accepted
126. Object.keys()
JavaScript
中等难度
195 accepted
130. async
JavaScript
容易
188 accepted
80. Proxy I
JavaScript
容易
179 accepted
82. Proxy II
JavaScript
容易
174 accepted
121. Generator return()
JavaScript
中等难度
168 accepted
119. return in Generator
JavaScript
中等难度
138 accepted
78. RegExp
JavaScript
RegExp
中等难度
129 accepted
125. try...catch...finally 2
JavaScript
中等难度
116 accepted
128. setTimeout IV
JavaScript
中等难度
74 accepted
127. JSON.stringify() II
JavaScript
中等难度
43 accepted
129. Function II
JavaScript
没多少人挑战
20 accepted
131. return await
JavaScript
11 accepted