另一个关于Object的例子。值、sort()和展开运算符。

var paintings = {
    0: {
        title: 'Oh my!',
        year: '2020',
        price: '3000'
    },
    1: {
        title: 'Portrait V',
        year: '2021',
        price: '2000'
    },
    2: {
        title: 'The last leaf',
        year: '2005',
        price: '600'
    }
}

我们使用object .values将对象转换为对象数组:

var toArray = Object.values(paintings)

然后我们对数组进行排序(按年份和价格)，使用spread操作符使原始数组不可变，并使用sort()方法对数组进行排序:

var sortedByYear = [...toArray].sort((a, b) => a.year - b.year)
var sortedByPrice = [...toArray].sort((a, b) => a.price - b.price)

最后，我们生成新的排序对象(同样，使用展开运算符来保持以[x: number]为键的对象的object的原始形式):

var paintingsSortedByYear = {
    ...sortedByYear
}

var paintingsSortedByPrice = {
    ...sortedByPrice
}

希望这对你有所帮助!

使用query-js你可以这样做

list.keys().select(function(k){
    return {
        key: k,
        value : list[k]
    }
}).orderBy(function(e){ return e.value;});

你可以在这里找到一篇关于query-js的介绍性文章

输入是对象，输出是对象，使用lodash & js内置库，降序或升序选项，不改变输入对象

Eg输入输出

{
  "a": 1,
  "b": 4,
  "c": 0,
  "d": 2
}
{
  "b": 4,
  "d": 2,
  "a": 1,
  "c": 0
}

实现

const _ = require('lodash');

const o = { a: 1, b: 4, c: 0, d: 2 };


function sortByValue(object, descending = true) {
  const { max, min } = Math;
  const selector = descending ? max : min;

  const objects = [];
  const cloned = _.clone(object);

  while (!_.isEmpty(cloned)) {
    const selectedValue = selector(...Object.values(cloned));
    const [key, value] = Object.entries(cloned).find(([, value]) => value === selectedValue);

    objects.push({ [key]: value });
    delete cloned[key];
  }

  return _.merge(...objects);
}

const o2 = sortByValue(o);
console.log(JSON.stringify(o2, null, 2));

感谢@orad在TypeScript中提供了答案。现在，我们可以在JavaScript中使用下面的代码片断。

function sort(obj,valSelector) { const sortedEntries = Object.entries(obj) .sort((a, b) => valSelector(a[1]) > valSelector(b[1]) ? 1 : valSelector(a[1]) < valSelector(b[1]) ? -1 : 0); return new Map(sortedEntries); } const Countries = { "AD": { "name": "Andorra", }, "AE": { "name": "United Arab Emirates", }, "IN": { "name": "India", }} // Sort the object inside object. var sortedMap = sort(Countries, val => val.name); // Convert to object. var sortedObj = {}; sortedMap.forEach((v,k) => { sortedObj[k] = v }); console.log(sortedObj); //Output: {"AD": {"name": "Andorra"},"IN": {"name": "India"},"AE": {"name": "United Arab Emirates"}}

非常简短简单!

var sortedList = {};
Object.keys(list).sort((a,b) => list[a]-list[b]).forEach((key) => {
    sortedList[key] = list[key]; });

我用sort的解决方案:

let list = {
    "you": 100, 
    "me": 75, 
    "foo": 116, 
    "bar": 15
};

let sorted = Object.entries(list).sort((a,b) => a[1] - b[1]);

for(let element of sorted) {
    console.log(element[0]+ ": " + element[1]);
}