How to append array data to spreadsheet rows using Google Script? - arrays

Question

I have created a script to retrieve data from REST API. I can view all the array data in logger. How do I add all those data into rows. This is my current function:
function myFunction() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var mainSheet = ss.getSheetByName("test")
mainSheet.getRange('A1:A3').clear();
var apiKey = 'test';
var URL_STRING = "test";
var url = URL_STRING + "?ApiKey=" + apiKey;
var response = UrlFetchApp.fetch(url);
var json = response.getContentText();
var data = JSON.parse(json);
var arr = [];
//Logger.log(data.output.o1);
for (var i=0;i<data.output.o1.length;i++){
x=(data.output.o1[i].company_name);
arr.push(x);
Logger.log(arr);
}
}
This is the sample output for arr:
This is my expected output:

Answer 1

I believe your goal as follows.
You want to put the values of arr from row 2 of the column "A" in the sheet "test".
In this case, how about the following modification?
From:
for (var i=0;i<data.output.o1.length;i++){
x=(data.output.o1[i].company_name);
arr.push(x);
Logger.log(arr);
}
To:
for (var i = 0; i < data.output.o1.length; i++) {
x = (data.output.o1[i].company_name);
arr.push([x]); // Modified
Logger.log(arr);
}
mainSheet.getRange(2, 1, arr.length).setValues(arr); // Added
If you want to append the values to the sheet, please modify mainSheet.getRange(2, 1, arr.length).setValues(arr); as follows.
mainSheet.getRange(mainSheet.getLastRow() + 1, 1, arr.length).setValues(arr);
References:
getLastRow()
getRange(row, column, numRows)
setValues(values)