Ways to update the datalayer with a changing price dynamically

Question

Is it possible to send a price that is constantly changing to the datalayer? Can I achieve this by sending a variable as shown in the example below?

Var price; //the price will change dynamically depending on the product value

dataLayer.push({
  'event': 'gtm-event',
  'value': price
});

Answer 1

Answer №1

Regarding the google-datalayer, there is a distinction in Javascript between passing primitives by value and objects by reference. For example:

var price = 3;
var object_with_price = { price: 3 };

var data_with_price = { value: price };
var data_with_object = { value: object_with_price };

If you update price to 4, data_with_price.price will still reflect the original value of 3 because it was passed by value.

However, if you change object_with_price.price to 4, then data_with_object.value.price will also be updated to 4.

By assigning object_with_price = { price: 5 }, data_with_object will remain unaffected.

Answer 2

Regarding the google-datalayer, there is a distinction in Javascript between passing primitives by value and objects by reference. For example:

var price = 3;
var object_with_price = { price: 3 };

var data_with_price = { value: price };
var data_with_object = { value: object_with_price };

If you update price to 4, data_with_price.price will still reflect the original value of 3 because it was passed by value.

However, if you change object_with_price.price to 4, then data_with_object.value.price will also be updated to 4.

By assigning object_with_price = { price: 5 }, data_with_object will remain unaffected.