Codewars 7 Kyu Is This A Triangle Javascript

Summary

this one is pretty straight forward kata link: this one uses the replace() method and recursion kata link: ... finding triangular numbers triangular numbers info: en.wikipedia.org/wiki/Triangular_number. this one uses the Math.hypot() function Math.hypot() info: ... this one uses the toLowerCase() method, the Set() constructor and the .size accessor property kata link: ... this one uses the indexOf() and slice() methods kata link: this one uses a for loop and the reduce() method kata link: ... this one uses spread syntax (...) kata link: this one uses the split() and match() methods, and more kata link: ... this one uses a double for loop and the map() and indexOf() methods kata link: ... this one uses a wikipedia page and the ternary operator factorial info: en.wikipedia.org/wiki/Factorial ternary operator info: ...