JavaScript - Separating the multi-value result of a field with commas -

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i have field returns multiple values following way (in multiple rows):

field
role1
role2
role3

i want separate resultset commas. end result should role1, role2, role3

how achieve this? have tried split, string.replace(" ", ",") whitespace comma, nothing works.

thanks,

you can split on newline , join on comma:

str.split('\n').join(',');

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