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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
1556 accepted
9. null and undefined
JavaScript
medium
1143 accepted
12. arguments
JavaScript
medium
1027 accepted
17. reduce
JavaScript
medium
761 accepted
113. push
JavaScript
medium
536 accepted
68. if II
JavaScript
medium
495 accepted
21. Array I
JavaScript
medium
467 accepted
20. name for Function expression
JavaScript
medium
448 accepted
84. Array.prototype.sort()
JavaScript
medium
431 accepted
42. Hoisting V
JavaScript
medium
370 accepted
43. JSON.stringify()
JavaScript
medium
298 accepted
73. window name
JavaScript
medium
249 accepted
90. array keys
JavaScript
medium
240 accepted
55. sparse array
JavaScript
medium
240 accepted
51. method
JavaScript
medium
201 accepted
126. Object.keys()
JavaScript
medium
200 accepted
85. String.raw()
JavaScript
medium
200 accepted
121. Generator return()
JavaScript
medium
169 accepted
119. return in Generator
JavaScript
medium
140 accepted
78. RegExp
JavaScript
RegExp
medium
131 accepted
125. try...catch...finally 2
JavaScript
medium
119 accepted
128. setTimeout IV
JavaScript
medium
76 accepted
127. JSON.stringify() II
JavaScript
medium
46 accepted
131. return await
JavaScript
medium
32 accepted