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JavaScript Quizzes
Test your knowledge of JavaScript the language itself.
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Difficulty: medium
tag: JavaScript
tag: Promise
6. Arrow Function
JavaScript
medium
1590 accepted
9. null and undefined
JavaScript
medium
1165 accepted
12. arguments
JavaScript
medium
1052 accepted
17. reduce
JavaScript
medium
780 accepted
113. push
JavaScript
medium
553 accepted
68. if II
JavaScript
medium
501 accepted
21. Array I
JavaScript
medium
479 accepted
20. name for Function expression
JavaScript
medium
458 accepted
84. Array.prototype.sort()
JavaScript
medium
436 accepted
42. Hoisting V
JavaScript
medium
377 accepted
43. JSON.stringify()
JavaScript
medium
304 accepted
73. window name
JavaScript
medium
255 accepted
55. sparse array
JavaScript
medium
243 accepted
90. array keys
JavaScript
medium
241 accepted
126. Object.keys()
JavaScript
medium
219 accepted
51. method
JavaScript
medium
204 accepted
85. String.raw()
JavaScript
medium
200 accepted
121. Generator return()
JavaScript
medium
171 accepted
119. return in Generator
JavaScript
medium
143 accepted
125. try...catch...finally 2
JavaScript
medium
132 accepted
78. RegExp
JavaScript
RegExp
medium
132 accepted
128. setTimeout IV
JavaScript
medium
90 accepted
131. return await
JavaScript
medium
82 accepted
127. JSON.stringify() II
JavaScript
medium
56 accepted