JSFiddle - React, Tailwind, and code Playground

JavaScript

var data = {
  "result": {
    "date": "23.08.2017",
    "eur": {
      "kup": "119.0352",
      "sre": "119.3934",
      "pro": "119.7516"
    },
    "usd": {
      "kup": "101.2032",
      "sre": "101.5077",
      "pro": "101.8122"
    }
  }
};

var keys = Object.keys(data.result);
for(var key in keys){
  if( typeof data.result[keys[key]] === 'object'){
  	$.each(data.result[keys[key]], function(i, v){
    	console.log(keys[key] + ", " + i+ ": " + v)
    })
  	
  }
}