javaScript объект получить элемент по индексу
myobj[Object.keys(myobj)[0]];
bisaek
myobj[Object.keys(myobj)[0]];//To get an object's key by index, call the Object. keys() method
//to get an array of the objects keys and use bracket notation
//to access the key at the specific index, e.g. Object. keys(obj)[1] .
myobj[Object.keys(myobj)[0]];