How to get the position of an object in an array? - node.js

Question

I'm trying to get the position in array of the first object so i can delete it with a function. The problem is: i don't know how to get the "index"value.
{
"2": {
"nome": "sou1",
"email": "adsa#lala.com",
"gênero": "masculino",
"id": 1,
"pos": 0
},
"3": {
"nome": "sou1",
"email": "adsa#lala.com",
"gênero": "masculino",
"id": 1,
"pos": 1
}
}
In this case, my output would be 2.

Answer 1

You can try the below
var someObject={
"2": {
"nome": "sou1",
"email": "adsa#lala.com",
"gênero": "masculino",
"id": 1,
"pos": 0
},
"3": {
"nome": "sou1",
"email": "adsa#lala.com",
"gênero": "masculino",
"id": 1,
"pos": 1
}};
console.log(Object.keys(someObject)[0]);
delete someObject[Object.keys(someObject)[0]];
console.log(someObject);

Answer 2

There is no ordering in JSON objects.
However, for your use case (if I correctly understand that), you can convert the JSON object into an array doing...
const someObject = {
a: "A",
b: "B",
c: "C"
}
const keys = Object.keys(someObject);
console.log(keys); // array of keys
let arr = [];
for(key of keys) {
arr.push(someObject[key]);
}
console.log(arr); // array of objects
...where the index of an element in the keys array (a key in your original JSON object) will be identical to the index of an element in the arr array (the corresponding value for that key in your original JSON object) which it maps to in your original JSON object, in a way giving you what you probably are looking for. Then you can access them using the array indices.
Hope this helps :)