Remove duplicate characters from string

Question

I have to make a function in JavaScript that removes all duplicated letters in a string. So far I\'ve been able to do this: If I have the word \"anaconda\" it shows me as a

Answer 1

For strings (in one line)

removeDuplicatesStr = str => [...new Set(str)].join('');

For arrays (in one line)

removeDuplicatesArr = arr => [...new Set(arr)]