Lodash ORDERBY對象

Question

我有一個數組：

const names = [{name: 'a', equal: 3}, 
{name: 'b', equal: 2}, 
{name: 'c', equal: 2}, 
{name: 'd', equal: 3}, 
{name: 'a1', equal: 1}] 

我運行_.groupBy（名稱， '等於'），結果獲得：

{1: [{equal: 1, name: 'a1'}], 
2: [{equal: 2, name: 'b'}, {equal: 2, name: 'c'}], 
3: [{equal: 3, name: 'a'}, {equal: 3, name: 'd'}]} 

但在這裏按名稱排序消失。如何在此對象中按名稱排序？

更新

我想：

{3: [{equal: 3, name: 'a'}, {equal: 3, name: 'd'}], 
1: [{equal: 1, name: 'a1'}], 
2: [{equal: 2, name: 'b'}, {equal: 2, name: 'c'}]} 

Answer 1

通過使用數組作爲結果集，可以在分組後對其進行排序。

var names = [{ name: 'a', equal: 3 }, { name: 'b', equal: 2 }, { name: 'c', equal: 2 }, { name: 'd', equal: 3 }, { name: 'a1', equal: 1 }], 
 
    equals = {}, 
 
    result = []; 
 

 
names.forEach(function (o) { 
 
    if (!equals[o.equal]) { 
 
     equals[o.equal] = []; 
 
     result.push(equals[o.equal]); 
 
    } 
 
    equals[o.equal].push(o); 
 
}); 
 

 
result.sort(function (a, b) { 
 
    return a[0].name.localeCompare(b[0].name); 
 
}); 
 

 
console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 2

可以使用lodash方法GROUPBY和sortBy一起

DEMO

const names = [{name: 'a', equal: 3}, 
 
{name: 'b', equal: 2}, 
 
{name: 'c', equal: 2}, 
 
{name: 'd', equal: 3}, 
 
{name: 'a1', equal: 1}]; 
 

 
var grouped = _.groupBy(names, function(name) { 
 
    return name.equal; 
 
}); 
 
var result = _.sortBy(grouped, ['name']); 
 
console.log(grouped);

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