将对象键的值推送到数组中

Question

I have an object like this:

{
  "PAV-001": {
    "09SGH6eBNbRpFw9WnHdQO1mYcku1": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku2": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku4": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku5": {}
  },
  "P-001": {
    "09SGH6eBNbRpFw9WnHdQO1mYcku1": {}
  },
  "PAV-002": {
    "09SGH6eBNbRpFw9WnHdQO1mYcku1": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku3": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku4": {},
    "09SGH6eBNbRpFw9WnHdQO1mYcku6": {}
  }
}

I want to store PAV-001's values(like:"09SGH6eBNbRpFw9WnHdQO1mYcku1" these) into an array, I tried: arr1.push(Object.keys(data[value])) But it doesn't work, how to address this issue? Thanks!

Answer 1

You can spread the the array obtained by Object.keys method and pass that to push method of the array like

arr1.push(...Object.keys(data[value]));

or you can use Array.prototype.concat method and assign the value back to the array like

arr1 = arr1.concat(Object.keys(data[value])); 

Answer 2

For values of a single key:

const object = {
    "PAV-001": {
        "09SGH6eBNbRpFw9WnHdQO1mYcku1": {},
        "09SGH6eBNbRpFw9WnHdQO1mYcku2": {},
        "09SGH6eBNbRpFw9WnHdQO1mYcku4": {},
        "09SGH6eBNbRpFw9WnHdQO1mYcku5": {}
    },
}

let myArray = []
Object.keys(object["PAV-001"]).forEach(key => myArray.push(key))

Or for the all values of all keys of object

Object.keys(object).forEach(_object => Object.keys(object[_object]).forEach(key => myArray.push(key)))

Answer 3

Perhaps, you can use Object.keys() which returns an array whose elements are strings. then just use map to map each key as a value to an array.

 const obj = { "PAV-001": { "09SGH6eBNbRpFw9WnHdQO1mYcku1": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku2": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku4": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku5": {} }, "P-001": { "09SGH6eBNbRpFw9WnHdQO1mYcku1": {} }, "PAV-002": { "09SGH6eBNbRpFw9WnHdQO1mYcku1": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku3": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku4": {}, "09SGH6eBNbRpFw9WnHdQO1mYcku6": {} } } var arr = Object.keys(obj["PAV-001"]).map((key) => key); console.log(arr)