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JavaScript Quizzes
Test your knowledge of JavaScript the language itself.
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Difficulty: medium
6. Arrow Function
JavaScript
medium
5814 tried
12. arguments
JavaScript
medium
5603 tried
9. null and undefined
JavaScript
medium
3816 tried
17. reduce
JavaScript
medium
2549 tried
68. if II
JavaScript
medium
2085 tried
21. Array I
JavaScript
medium
2025 tried
20. name for Function expression
JavaScript
medium
1886 tried
113. push
JavaScript
medium
1816 tried
84. Array.prototype.sort()
JavaScript
medium
1677 tried
42. Hoisting V
JavaScript
medium
1493 tried
73. window name
JavaScript
medium
1231 tried
43. JSON.stringify()
JavaScript
medium
1186 tried
55. sparse array
JavaScript
medium
1144 tried
90. array keys
JavaScript
medium
988 tried
51. method
JavaScript
medium
975 tried
126. Object.keys()
JavaScript
medium
772 tried
85. String.raw()
JavaScript
medium
689 tried
121. Generator return()
JavaScript
medium
654 tried
78. RegExp
JavaScript
RegExp
medium
640 tried
119. return in Generator
JavaScript
medium
507 tried
125. try...catch...finally 2
JavaScript
medium
406 tried
128. setTimeout IV
JavaScript
medium
278 tried
127. JSON.stringify() II
JavaScript
medium
219 tried
131. return await
JavaScript
medium
123 tried