基于键的降序对象

Question

I am using some API and they return json in following format , problem is they send keys as floating number.I cannot modify their backend part to make proper json.So I am looking for quickfix to show following data in descending order.

220: {CE: {…}, PE: {…}}
225: {CE: {…}, PE: {…}}
230: {CE: {…}, PE: {…}}
235.23: {CE: {…}, PE: {…}}
240.32: {CE: {…}, PE: {…}}
245: {CE: {…}, PE: {…}}
250: {CE: {…}, PE: {…}}
255.12: {CE: {…}, PE: {…}}

I want to reverse it in descending order , I was trying to figure out how to do it for past 3 hours.

I tried following code

function reverseObject(object) {
        var newObject = {};
        var keys = [];
        for (var key in object) {
            keys.push(key);
        }
        for (var i = keys.length - 1; i >= 0; i--) {

          var value = object[keys[i]];
          newObject[keys[i]]= value;
        }       

        return newObject;
      }

Answer 1

This will create an array of tuples [['255.12', {CE: {…}, PE: {…}}],['250', {CE: {…}, PE: {…}}], …] using Object.entries() and Array.prototype.sort() :

function entriesDescending (object) {
  return Object
    .entries(object)
    .sort(([a], [b]) => b - a)
}

Answer 2

 const response = { 220: {CE: 'foo', PE: 'bar'}, 225: {CE: 'foo', PE: 'bar'}, 230: {CE: 'foo', PE: 'bar'}, 235.23: {CE: 'foo', PE: 'bar'}, 240.32: {CE: 'foo', PE: 'bar'}, 245: {CE: 'foo', PE: 'bar'}, 250: {CE: 'foo', PE: 'bar'}, 255.12: {CE: 'foo', PE: 'foo'}, } const fromEntries = (acc, [key, value]) => ({...acc, [key]: value}) const byNumberKey = ([a], [b]) => a - b const sortKeys = obj => Object.entries(obj) .sort(byNumberKey) .reduce(fromEntries, {}) console.log( sortKeys(response) )