get first n elements of object javascript

Question

I have object (not array) with key and value:

const obj = {
 1: { id: 1, name: 'name', ...},
 2: { id: 2, name: 'name', ...},
 3: { id: 3, name: 'name', ...},
 4: { id: 4, name: 'name', ...},
 5: { id: 5, name: 'name', ...},
 6: { id: 6, name: 'name', ...},
}

How I get the first 3 elements of this object in javascript?

For example I want to get 3 the object I expect is (with key and value):

const obj = {
 1: { id: 1, name: 'name', ...},
 2: { id: 2, name: 'name', ...},
 3: { id: 3, name: 'name', ...},
}

Answer 1

You can use Object.entries and slice it and then convert it back to an object using Object.fromEntries

const obj = {
 1: { id: 1, name: 'name'},
 2: { id: 2, name: 'name'},
 3: { id: 3, name: 'name'},
 4: { id: 4, name: 'name'},
 5: { id: 5, name: 'name'},
 6: { id: 6, name: 'name'},
}
let sliced = Object.fromEntries(Object.entries(obj).slice(0,3))

console.log(sliced)