How to get the value of a property of an object in an array in Google Tag Manager

Question

I want to get the value of a property of an object in an array.
I am sending the following items to Google Tag Manager.

items: [{id: 'exampleX', price: '9999'},{id: 'exampleY', price: '9999'},{id: 'exampleZ', price: '9999'}]

Is there any other way to get the price of exampleX but with custom JavaScript?
Or is there a simpler way to get it?

Best Regards,

Answer 1

Check this out:

const items = [{id: 'exampleX', price: '9999'},{id: 'exampleY', price: '9999'},{id: 'exampleZ', price: '9999'}]

const price = items.filter(e => e.id === "exampleX").pop()?.price;
console.log(price)

• items.filter(e => e.id === "exampleX") matches every element where id==="exampleX"
• .pop() to get the first element from array (might be null if no element is found)
• ?.price safe unwrap to get property price (undefined if no element was found)

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Update:

const items = [{id: 'exampleX', price: '9999'},{id: 'exampleY', price: '9999'},{id: 'exampleZ', price: '9999'}]

const price = items[0].price; // first element = index 0
console.log(price)