I am working with a object array in JavaScript and i want to output the code in a specific format i.e to remove the object array and created it like a array only and remove rest of the parameters.
 purchase_roas: [
            {
               action_type: "omni_purchase",
               value: "29.650019"
            }
         ],
The output I need is in this format:
purchase_roas:29.650019
I tried using map function but the output is not the expected one. I used the code below:
for (var number in purchase_roas) {
  if (purchase_roas.hasOwnProperty(number)) {
    keys.push(number);
  }
}
The output i am getting is ["0"]
