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Arrays and strings
Frontend Developer
Arrays and strings questions
14 questions on Arrays and strings for frontend developers, easiest first.
Easy
4
Sorting numbers without a comparator
easy
Array.from with a length
easy
replace changes only one match
easy
Changing one letter of a string
easy
Medium
6
reduce on an empty array
medium
Adding two arrays
medium
map over new Array(3)
medium
slice versus splice
medium
for...in over an array
medium
includes versus indexOf with NaN
medium
Hard
4
map with parseInt
hard
Comparator that returns a boolean
hard
Sorting orders that tie
hard
Arguments to a tagged template
hard
