How to get values from dataLayer object

Question

I want to get some values from dataLayer object of google tag manager. In chrome tag assistance i am getting values like this

[
  {
    "gtm.start": 1503053374849,
    "event": "gtm.js",
    "gtm.uniqueEventId": 0
  },
  {
    "event": "gtm.dom",
    "gtm.uniqueEventId": 1
  },
  {
    "event": "gtm.load",
    "gtm.uniqueEventId": 2
  },
  {
    "Linker": "_ga=53655374"
  }
]

I need to get the "Linker" value. i tried dataLayer[3].Linker but it gives me "undefined" or blank also same for dataLayer[1].event (it's blank not return value = "gtm.dom") When i try dataLayer[0].event it's return correct 'gtm.js'

Please help me how to get "Linker" value

Solution 1

You can access the pushed data via the google tag manager javascript-api. The variable part will be the container-id of your GTM container. Make shure you adress the correct one.

google_tag_manager['<container-id>'].dataLayer.get('gtm.start');
//result e.g.: 1210115541132

The result will be the last value of the datalayers state

Solution 2

Print the Data Layer in a table console.table(dataLayer); and note the index value it will show for Linker.

Then you may use dataLayer[XXX] as XXX being the index value for Linker.