Creating dynamic term sets for accented-characters issue

Hi All,

I am creating dynamic term sets using jsom, which is working fine for normal text, but if I try to create term set for accented text like qué, cómo, dóndé , por qué, quién then the term sets is create but looks like below 



Term set is created with ? in text, but when I try to create a term set manually then the accented text comes as it is.

Is there a way I can handle this case ?

Thanks in Advance, Jiniv Thakkar