BFE
.dev
buy us
a coffee
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
tag: JavaScript
1. Promise order
JavaScript
Promise
容易
15246 tried
3. Promise then callbacks
JavaScript
Promise
容易
7932 tried
4. Promise then callbacks II
JavaScript
Promise
容易
7250 tried
2. Promise executor
JavaScript
Promise
容易
7089 tried
5. scope
JavaScript
容易
6699 tried
6. Arrow Function
JavaScript
中等难度
5789 tried
76. const
JavaScript
有点难?
5673 tried
8. Implicit Coercion I
JavaScript
容易
5579 tried
12. arguments
JavaScript
中等难度
5578 tried
7. Increment Operator
JavaScript
容易
5317 tried
9. null and undefined
JavaScript
中等难度
3798 tried
10. Equal
JavaScript
容易
3740 tried
97. `this` V
JavaScript
容易
3056 tried
93. string
JavaScript
容易
3019 tried
70. function
JavaScript
容易
2629 tried
27. Hoisting I
JavaScript
容易
2625 tried
11. Implicit Coercion II
JavaScript
容易
2560 tried
17. reduce
JavaScript
中等难度
2523 tried
19. `this`
JavaScript
容易
2293 tried
29. Hoisting III
JavaScript
容易
2140 tried
68. if II
JavaScript
中等难度
2079 tried
67. if
JavaScript
容易
2041 tried
21. Array I
JavaScript
中等难度
2015 tried
20. name for Function expression
JavaScript
中等难度
1869 tried
14. Addition vs Unary Plus
JavaScript
容易
1852 tried
113. push
JavaScript
中等难度
1812 tried
13. Operator precedence
JavaScript
容易
1806 tried
86. setTimeout III
JavaScript
容易
1775 tried
28. Hoisting II
JavaScript
容易
1766 tried
120. try..catch..finally
JavaScript
容易
1737 tried
117. `this` VII
JavaScript
容易
1734 tried
89. let
JavaScript
容易
1693 tried
69. undefined
JavaScript
容易
1684 tried
41. `this` III
JavaScript
容易
1668 tried
84. Array.prototype.sort()
JavaScript
中等难度
1666 tried
15. instanceOf
JavaScript
容易
1641 tried
23. Promise.all()
JavaScript
容易
1635 tried
61. onClick
JavaScript
容易
1609 tried
38. Hoisting IV
JavaScript
容易
1607 tried
16. parseInt
JavaScript
容易
1583 tried
88. try...catch
JavaScript
容易
1524 tried
96. comparison
JavaScript
容易
1499 tried
81. setTimeout II
JavaScript
容易
1488 tried
42. Hoisting V
JavaScript
中等难度
1488 tried
32. Hoisting IIII
JavaScript
容易
1479 tried
47. Promise Order II
JavaScript
容易
1456 tried
50. async await
JavaScript
容易
1401 tried
54. setTimeout(0ms)
JavaScript
容易
1384 tried
36. Promise.prototype.finally()
JavaScript
容易
1381 tried
72. Array length
JavaScript
容易
1377 tried
39. var
JavaScript
容易
1360 tried
94. emoji
JavaScript
容易
1358 tried
18. Promise executor II
JavaScript
容易
1357 tried
114. constructor
JavaScript
容易
1356 tried
92. NaN
JavaScript
容易
1320 tried
100. `var` vs `let`
JavaScript
容易
1292 tried
95. number format
JavaScript
容易
1291 tried
116. strict
JavaScript
容易
1269 tried
73. window name
JavaScript
中等难度
1220 tried
33. `this` II
JavaScript
容易
1214 tried
22. min max
JavaScript
容易
1200 tried
65. Function name
JavaScript
容易
1196 tried
43. JSON.stringify()
JavaScript
中等难度
1163 tried
49. `this` IV
JavaScript
容易
1138 tried
55. sparse array
JavaScript
中等难度
1132 tried
45. Hoisting VI
JavaScript
容易
1132 tried
123. return in Generator 2
JavaScript
容易
1068 tried
25. zero
JavaScript
容易
1052 tried
91. largest Array index
JavaScript
容易
1024 tried
99. closure
JavaScript
容易
1012 tried
124. comma 2
JavaScript
容易
1011 tried
37. push unshift
JavaScript
容易
1010 tried
63. in
JavaScript
容易
1004 tried
90. array keys
JavaScript
中等难度
985 tried
26. true or false
JavaScript
容易
985 tried
87. instanceOf 2
JavaScript
容易
970 tried
51. method
JavaScript
中等难度
968 tried
111. falsy
JavaScript
容易
953 tried
79. Equal III
JavaScript
容易
946 tried
44. Function call
JavaScript
容易
944 tried
24. Equality & Sameness
JavaScript
容易
944 tried
64. reference type
JavaScript
容易
939 tried
109. isNaN()
JavaScript
容易
928 tried
103. Promise Order III
JavaScript
容易
927 tried
48. Prototype
JavaScript
容易
908 tried
46. Implicit Coercion IV
JavaScript
容易
897 tried
105. typeof
JavaScript
容易
889 tried
107. `this` VI
JavaScript
容易
887 tried
115. parseInt II
JavaScript
容易
886 tried
122. Iterable
JavaScript
容易
872 tried
60. postMessage
JavaScript
容易
863 tried
30. Equal II
JavaScript
容易
828 tried
108. property key
JavaScript
容易
821 tried
106. Promise.all() II
JavaScript
容易
810 tried
83. Plus Plus
JavaScript
容易
808 tried
102. Arrow Function II
JavaScript
容易
803 tried
53. Prototype 2
JavaScript
容易
788 tried
74. Typed Array length
JavaScript
容易
769 tried
126. Object.keys()
JavaScript
中等难度
762 tried
77. parseInt 2
JavaScript
容易
752 tried
118. structuredClone()
JavaScript
容易
748 tried
62. MessageChannel
JavaScript
容易
736 tried
85. String.raw()
JavaScript
中等难度
682 tried
52. requestAnimationFrame
JavaScript
容易
665 tried
34. precedence
JavaScript
容易
660 tried
121. Generator return()
JavaScript
中等难度
654 tried
112. Symbol
JavaScript
容易
635 tried
78. RegExp
JavaScript
RegExp
中等难度
635 tried
56. to primitive
JavaScript
容易
618 tried
31. Math
JavaScript
容易
613 tried
35. Implicit Coercion III
JavaScript
容易
573 tried
101. Equal IV
JavaScript
容易
569 tried
110. yield
JavaScript
容易
565 tried
66. comma
JavaScript
容易
562 tried
59. override setter
JavaScript
容易
541 tried
57. non-writable
JavaScript
容易
539 tried
104. Inheritance
JavaScript
容易
533 tried
130. async
JavaScript
容易
524 tried
82. Proxy II
JavaScript
容易
511 tried
119. return in Generator
JavaScript
中等难度
502 tried
80. Proxy I
JavaScript
容易
491 tried
40. RegExp.prototype.test
JavaScript
容易
488 tried
58. inherit getter setter
JavaScript
容易
463 tried
71. two-way generator
JavaScript
容易
404 tried
75. meaningless calculation
JavaScript
容易
403 tried
125. try...catch...finally 2
JavaScript
中等难度
402 tried
128. setTimeout IV
JavaScript
中等难度
274 tried
127. JSON.stringify() II
JavaScript
中等难度
212 tried
129. Function II
JavaScript
没多少人挑战
62 tried
131. return await
new
JavaScript
56 tried