Get the value of an object with an unknown single key in JS

Question

How can I get the value of an object with an unknown single key?

Example:

var obj = {dbm: -45}

I want to get the -45 value without

Answer 1

There's a new option now: Object.values. So if you know the object will have just one property:

const array = Object.values(obj)[0];

Live Example:

const json = '{"EXAMPLE": [ "example1","example2","example3","example4" ]}';
const obj = JSON.parse(json);
const array = Object.values(obj)[0];
console.log(array);

If you need to know the name of the property as well, there's Object.entries and destructuring:

const [name, array] = Object.entries(obj)[0];

Live Example:

const json = '{"EXAMPLE": [ "example1","example2","example3","example4" ]}';
const obj = JSON.parse(json);
const [name, array] = Object.entries(obj)[0];
console.log(name);
console.log(array);