Codewars 7 Kyu Nice Array Javascript

Summary

this one uses the every() and the some() methods every() info: ... this one uses the concat() method, spread syntax (...), and more concat() info: ... this one uses the trim() method trim() info: ... this one uses the map() and filter() methods, and more kata link: ... this one uses the push(), slice(), and filter() methods push() info: ... this one uses a for...in statement, a double for loop, and more kata link: ... this one uses the String() constructor, the split() method, and more String() info: ... this one uses the sort() method kata link: this one uses currying and the map() method kata link: this one uses the indexOf() and slice() methods kata link: this one uses the Set() constructor, the sort() method, and more spread syntax (. this one uses Math.abs() and indexOf() Math.abs() info: ... this one uses a for loop and the toUpperCase() method, and more kata link: ...