Update a multiple select field using Airtable API

[RSk]

Hi, I’m writing a program in Node.js using AIrtable API that fetches the record from Airtable and sends it to WhatsApp. The problem I’m facing is that for example, there are three columns

COL1 | COL2 | COL3

I’m trying to achieve that if any of the columns are empty, it skips that one and moves on to the another.
But when I execute col1 == null || col1 == undefined it returns false. This statement returns true only for the last column.

Also when I execute col1.length it returns 1 but for the last column, it returns Cannot read properties of undefined (reading 'length')

I don’t understand why the empty cells/ column before the last one doesn’t return undefined.

[kuovonne]

What is the field type of each column?
Can you see the actual value of the field?
Is it possible that the field looks empty but actually has a value?
For example, could the field have a single space character?

[RSk]

All the fields have long text as their type and no I checked all the fields are same as the last one.
But only the last one returns undefined rest of them returns length as 1.

[kuovonne]

Are any of them lookup fields?
Do any of them have rich text formatting turned on?

[RSk]

No to both questions

[kuovonne]

What are the actual values? Have you used console.log to see their values?

If you use scripting from within the base, what are the actual values?

[RSk]

Yes I have

Col 1 and Col2 log return a blank and length 1
Col 3 returns undefined.

[kuovonne]

RSk:

Col 1 and Col2 log return a blank and length 1

What do you mean by “a blank”? What is the data type? (Blank is not a data type.) Is it a blank string? Is it an array? Is it a string with a single white space character, such as a space, a tab, or a new line?

[RSk]

[kuovonne]

It really looks like the value is a text string with a single space character.