Trying to reference a variable from another variables value

Asked Oct 01 '20 at 13:59

Active Oct 01 '20 at 13:59

Viewed 7 times

I'm trying to pass in a reference to one of the declared arrays a,b,c or d depending on the value of element.locationPrimary ( which will always be a,b,c or d). I seem to be passing it in as a string and as a result not able to reference the arrays. I know what I'm doing wrong here but I don't know the terminology to search for an answer or the correct way to do this.

    const a = [];
    const b = [];
    const c = [];
    const d = [];
    records.forEach((element) => {
      **element.locationPrimary**.push([element.locationSecondary, element._id]);
    });

element.locationPrimary.push should push to either a,b,c or d depending on its value

each record has a locationPrimary value of a, b, c or d

I've run into this problem a few times and could really do with an example of the correct way of doing this, I'm very much still getting to grips with JS. I feel it may be a very simple solution however its late and I need to get this sorted before I can sleep soundly tonight!

asked Oct 01 '20 at 13:59

user3927638

1

Use an object of arrays instead – CertainPerformance Oct 01 '20 at 14:00
Do you mean ``` const boxes = { a: [], b: [], c: [], d: [], }; ``` how would I reference each one though? ` boxes['element.locationPrimary'].push( ` ` boxes.element.locationPrimary.push( ` Doesn't do it. Can you clarify what you mean? – user3927638 Oct 01 '20 at 14:05
`boxes[element.locationPrimary]` – CertainPerformance Oct 01 '20 at 14:08
Thank you very much. So simple I feel silly for asking! – user3927638 Oct 01 '20 at 14:11

Trying to reference a variable from another variables value

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