Creating Nested Object Property Names Dynamically in Javascript for Google Adwords Scripts (ES5)

Question

I'm trying to create a javascript object that contains nested properties where some of the property names need to be generated dynamically. The following is what I have that is already working:

postObject[campaignObj.campaignName] = {
    "campaignSet" : {
      "groupName" : groupObj.adGroupName,
      "textads" : groupObj.textAds
    }
}

However, I need "campaignSet" to be named dynamically from a variable or other object value. The possibility exists for several campaign sets to exist that must all be contained under postObject[campaignObj.campaignName].

My thought process was that something like the options below should work

postObject[campaignObj.campaignName] = {
    [campaignObj.campaignSet] : {
      "groupName" : groupObj.adGroupName,
      "textads" : groupObj.textAds
    }
}

but this code above keeps throwing an "Invalid property ID" error.

So I tried this

postObject[campaignObj.campaignName] = {
    campaignObj.campaignSet : {
      "groupName" : groupObj.adGroupName,
      "textads" : groupObj.textAds
    }
}

Which caused "Missing : after property ID".

I feel this should be pretty straightforward but it continues to elude me. Any help would be greatly appreciated.

Answer 1

This should do it:

postObject[campaignObj.campaignName] = postObject[campaignObj.campaignName] || {}; // in case is not defined

postObject[campaignObj.campaignName][campaignSetDynamicName] = {
  "groupName" : groupObj.adGroupName,
  "textads" : groupObj.textAds
}