javascript - in the google-sheet script editor - Can't use subsrting function for a string in array -


in code function calls array , string, looks same begging in strings within array.

it goes this:

function tavnit(train, str) {    f=0;    i=0;    while ((f==0) && (i<train.length))    {      var trs=train[i];      if (str.substring(0,2)==trs.substring(0,2))      {        f=1      }      i++    }    return f;  }

there no errors when saving, when running there -

typeerror: cannot find function substring in object xxvxj. (line 7).

why doesn't reconize string? , how should make recognize it?

i found problem - when google sheet function using column argument - isn't simple array - matrix implemented array of arrays:

[[tvg],[ttxv],[..],..]

so if want call string, first need call array, , second first (and only) object in array -

this way resolved it:

function tavnit(train, str) {   f=0;   i=0;   while ((f==0) && (i<train.length))  {  line=train[i];  trs=line[0];  if (sametavnit(str, trs)==1)   {     return 1;   }  i++  } return f; }

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