用lodash将数组中的项目按多个字段排序 [英] Sort items in an array by more than one field with lodash

问题描述

如何使用lodash按多个字段对对象数组进行排序.因此，对于这样的数组:

How can I sort an array of objects by more then one field using lodash. So for an array like this:

[
  {a: 'a', b: 2},
  {a: 'a', b: 1},
  {a: 'b', b: 5},
  {a: 'a', b: 3},
]

我希望得到这个结果

[
  {a: 'a', b: 1},
  {a: 'a', b: 2},
  {a: 'a', b: 3},
  {a: 'b', b: 5},
]

推荐答案

在当前版本的lodash(2.4.1)中，这要容易得多.您可以这样做:

This is much easier in a current version of lodash (2.4.1). You can just do this:

var data = [
    {a: 'a', b: 2},
    {a: 'a', b: 1},
    {a: 'b', b: 5},
    {a: 'a', b: 3},
];

data = _.sortBy(data, ["a", "b"]);  //key point: Passing in an array of key names

_.map(data, function(element) {console.log(element.a + " " + element.b);});

它将输出到控制台:

"a 1"
"a 2"
"a 3"
"b 5"

警告:请参阅下面的评论.看起来好像在版本3中被简称为 sortByAll ，但现在又回到了 代替 .

Warning: See the comments below. This looks like it was briefly called sortByAll in version 3, but now it's back to sortBy instead.

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