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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: 最多通过
1. Promise order
JavaScript
Promise
容易
4952 accepted
2. Promise executor
JavaScript
Promise
容易
4457 accepted
3. Promise then callbacks
JavaScript
Promise
容易
3207 accepted
5. scope
JavaScript
容易
2825 accepted
4. Promise then callbacks II
JavaScript
Promise
容易
2300 accepted
7. Increment Operator
JavaScript
容易
2287 accepted
8. Implicit Coercion I
JavaScript
容易
1748 accepted
6. Arrow Function
JavaScript
中等难度
1527 accepted
10. Equal
JavaScript
容易
1395 accepted
93. string
JavaScript
容易
1128 accepted
9. null and undefined
JavaScript
中等难度
1121 accepted
69. undefined
JavaScript
容易
1044 accepted
97. `this` V
JavaScript
容易
1014 accepted
12. arguments
JavaScript
中等难度
1006 accepted
13. Operator precedence
JavaScript
容易
994 accepted
89. let
JavaScript
容易
981 accepted
27. Hoisting I
JavaScript
容易
970 accepted
28. Hoisting II
JavaScript
容易
859 accepted
70. function
JavaScript
容易
850 accepted
86. setTimeout III
JavaScript
容易
841 accepted
11. Implicit Coercion II
JavaScript
容易
786 accepted
29. Hoisting III
JavaScript
容易
783 accepted
39. var
JavaScript
容易
755 accepted
17. reduce
JavaScript
中等难度
746 accepted
19. `this`
JavaScript
容易
737 accepted
23. Promise.all()
JavaScript
容易
683 accepted
18. Promise executor II
JavaScript
容易
678 accepted
96. comparison
JavaScript
容易
669 accepted
41. `this` III
JavaScript
容易
667 accepted
79. Equal III
JavaScript
容易
646 accepted
99. closure
JavaScript
容易
642 accepted
61. onClick
JavaScript
容易
638 accepted
45. Hoisting VI
JavaScript
容易
616 accepted
67. if
JavaScript
容易
608 accepted
94. emoji
JavaScript
容易
602 accepted
54. setTimeout(0ms)
JavaScript
容易
601 accepted
15. instanceOf
JavaScript
容易
599 accepted
100. `var` vs `let`
JavaScript
容易
594 accepted
14. Addition vs Unary Plus
JavaScript
容易
583 accepted
38. Hoisting IV
JavaScript
容易
580 accepted
37. push unshift
JavaScript
容易
577 accepted
63. in
JavaScript
容易
570 accepted
120. try..catch..finally
JavaScript
容易
569 accepted
33. `this` II
JavaScript
容易
566 accepted
117. `this` VII
JavaScript
容易
561 accepted
47. Promise Order II
JavaScript
容易
557 accepted
105. typeof
JavaScript
容易
556 accepted
111. falsy
JavaScript
容易
550 accepted
76. const
JavaScript
有点难?
545 accepted
44. Function call
JavaScript
容易
541 accepted
81. setTimeout II
JavaScript
容易
540 accepted
22. min max
JavaScript
容易
527 accepted
16. parseInt
JavaScript
容易
527 accepted
113. push
JavaScript
中等难度
526 accepted
46. Implicit Coercion IV
JavaScript
容易
526 accepted
65. Function name
JavaScript
容易
520 accepted
124. comma 2
JavaScript
容易
510 accepted
91. largest Array index
JavaScript
容易
508 accepted
72. Array length
JavaScript
容易
497 accepted
107. `this` VI
JavaScript
容易
493 accepted
68. if II
JavaScript
中等难度
488 accepted
49. `this` IV
JavaScript
容易
488 accepted
92. NaN
JavaScript
容易
484 accepted
95. number format
JavaScript
容易
468 accepted
88. try...catch
JavaScript
容易
466 accepted
21. Array I
JavaScript
中等难度
460 accepted
32. Hoisting IIII
JavaScript
容易
459 accepted
50. async await
JavaScript
容易
458 accepted
36. Promise.prototype.finally()
JavaScript
容易
447 accepted
24. Equality & Sameness
JavaScript
容易
439 accepted
20. name for Function expression
JavaScript
中等难度
438 accepted
114. constructor
JavaScript
容易
432 accepted
48. Prototype
JavaScript
容易
431 accepted
53. Prototype 2
JavaScript
容易
430 accepted
115. parseInt II
JavaScript
容易
427 accepted
84. Array.prototype.sort()
JavaScript
中等难度
426 accepted
74. Typed Array length
JavaScript
容易
421 accepted
26. true or false
JavaScript
容易
417 accepted
116. strict
JavaScript
容易
413 accepted
103. Promise Order III
JavaScript
容易
404 accepted
109. isNaN()
JavaScript
容易
393 accepted
106. Promise.all() II
JavaScript
容易
392 accepted
123. return in Generator 2
JavaScript
容易
382 accepted
34. precedence
JavaScript
容易
381 accepted
87. instanceOf 2
JavaScript
容易
368 accepted
42. Hoisting V
JavaScript
中等难度
362 accepted
98. Promise executor IV
Promise
容易
360 accepted
122. Iterable
JavaScript
容易
359 accepted
102. Arrow Function II
JavaScript
容易
350 accepted
108. property key
JavaScript
容易
336 accepted
60. postMessage
JavaScript
容易
336 accepted
64. reference type
JavaScript
容易
335 accepted
25. zero
JavaScript
容易
332 accepted
30. Equal II
JavaScript
容易
331 accepted
66. comma
JavaScript
容易
318 accepted
101. Equal IV
JavaScript
容易
317 accepted
104. Inheritance
JavaScript
容易
310 accepted
59. override setter
JavaScript
容易
310 accepted
112. Symbol
JavaScript
容易
300 accepted
31. Math
JavaScript
容易
294 accepted
43. JSON.stringify()
JavaScript
中等难度
292 accepted
40. RegExp.prototype.test
JavaScript
容易
285 accepted
62. MessageChannel
JavaScript
容易
280 accepted
83. Plus Plus
JavaScript
容易
276 accepted
57. non-writable
JavaScript
容易
276 accepted
77. parseInt 2
JavaScript
容易
259 accepted
52. requestAnimationFrame
JavaScript
容易
259 accepted
118. structuredClone()
JavaScript
容易
249 accepted
73. window name
JavaScript
中等难度
243 accepted
90. array keys
JavaScript
中等难度
235 accepted
55. sparse array
JavaScript
中等难度
235 accepted
71. two-way generator
JavaScript
容易
230 accepted
35. Implicit Coercion III
JavaScript
容易
225 accepted
110. yield
JavaScript
容易
219 accepted
58. inherit getter setter
JavaScript
容易
217 accepted
56. to primitive
JavaScript
容易
210 accepted
75. meaningless calculation
JavaScript
容易
206 accepted
51. method
JavaScript
中等难度
198 accepted
85. String.raw()
JavaScript
中等难度
196 accepted
126. Object.keys()
JavaScript
中等难度
187 accepted
80. Proxy I
JavaScript
容易
178 accepted
82. Proxy II
JavaScript
容易
173 accepted
121. Generator return()
JavaScript
中等难度
165 accepted
130. async
JavaScript
容易
149 accepted
119. return in Generator
JavaScript
中等难度
135 accepted
78. RegExp
JavaScript
RegExp
中等难度
128 accepted
125. try...catch...finally 2
JavaScript
中等难度
113 accepted
128. setTimeout IV
JavaScript
中等难度
67 accepted
127. JSON.stringify() II
JavaScript
中等难度
38 accepted
129. Function II
JavaScript
没多少人挑战
16 accepted