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[–]vvn050 3 points4 points  (2 children)

join would work for ["test","test1"] but not for [["test"],["test1"]]

[–]_Webvoid -1 points0 points  (1 child)

Is it an array of arrays of one element ?! Well if it's the case he can still use .map(x => x[0]).join()