Question 109507 in Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Sort Json Object in an array/text

I was wondering if i can sort the json keys in order as an array by the values.

Below is a json object

{
  "p1": {
    "name": "*****",
    "age": "18"
  },
  "p2": {
    "name": "*****",
    "age": "14"
  },
  "p3": {
    "name": "*****",
    "age": "24"
  }
}

and i want it to get sorted in array/text in ascending order by the values of the subkey "age".
["p2", "p1", "p3"]

I haven’t tried anything as I have no idea what to do, can someone return me an example…

Tags:

2

Answers


  1. 0

    This is possible using the <Object>#keys method.

    const obj = {
    "p1": {
        "name": "*****",
        "age": "18"
    },
    "p2": {
        "name": "*****",
        "age": "14"
    },
    "p3": {
        "name": "*****",
        "age": "24"
    }
}
const keys = Object.keys(obj);

// Then sort
const sorted = keys.sort((a, b) => parseInt(obj[a].age) - parseInt(obj[b].age));
    Login or Signup to reply.
  2. 0

    You can simply use Object.keys and sort it based on their age properties:

    const data = { "p1": { "name": "*****", "age": "18" }, "p2": { "name": "*****", "age": "14" }, "p3": { "name": "*****", "age": "24" }}

const dataKeysSortedByAge = Object.keys(data).sort((a, b) => data[a].age - data[b].age)
console.log(dataKeysSortedByAge)

    If the snippet is confusing:

    1. Object.keys returns an array containing the keys in the object
    2. The sort function takes a callback containing two parameters, where a positive value means a is greater, and a negative value means b is greater
    3. We subtract one property’s age from the other one; we can be lazy here and not convert the values to a number because substraction coerces the values to numbers
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search