Create text file on c3 then name it 1.txt, copy this text then paste to 1.txt:
text1 -end
text2 -end
text3 -end
text4 -end
text5 -end
text6 -end
text7 -end
text8 -end
text9 -end
text10 -end
then create 1 TextInput, add function, ajax, array, nwjs.
If you want external file different with project root directory then use copy file on nwjs action,
Example copy file from C:\1.txt to NWjs.AppFolder then use ajax to request the file ( ajax request file->1.txt).
Hope helps.
More information:
construct.net/en/make-games/manuals/construct-3/plugin-reference/nw-js