How to find last element of a javascript object without loop?

Question

My object is:

{
  "CountryName": { "IsAll": "1", "Dependency": "" },
  "DivisionName": { "IsAll": "0", "Dependency": "RegionName" },
  "DistrictName": { "IsAll": "0", "Dependency": "" },
  "ThanaName": { "IsAll": "1", "Dependency": "" }
}

I want to find "ThanaName": { "IsAll": "1", "Dependency": "" }

Answer 1

Try this

var obj = {
  "CountryName": { "IsAll": "1", "Dependency": "" },
  "DivisionName": { "IsAll": "0", "Dependency": "RegionName" },
  "DistrictName": { "IsAll": "0", "Dependency": "" },
  "ThanaName": { "IsAll": "1", "Dependency": "" } 
}  
var totalKeys = Object.keys(obj).length;
var key = Object.keys(obj)[totalKeys-1];
console.log(key,obj[key])

But this may not work in all cases, see this link