按字典顺序对基于嵌套值的对象数组进行排序 [英] Sort a array of objects lexicographically based on a nested value

问题描述

使用Javascript，我想知道如何根据每个对象中的字符串值按字典顺​​序对一组对象进行排序。

Using Javascript, I would like to know how to sort lexicographically a array of objects based on a string value in each object.

考虑：

[
 {
    "name" : "bob",
    "count" : true
    "birthday" : 1972
 },
      {
    "name" : "jill",
    "count" : false
    "birthday" : 1922
 },
      {
    "name" : "Gerald",
    "count" : true
    "birthday" : 1920
 }
 ]

如何按名称的字母顺序对数组进行排序？
名称值是用户名，所以我想保留字母大小写。

How can I sort the array alphabetically by name? The name values are usernames, so I would like to maintain the letter casing.

推荐答案

var obj = [...];

obj.sort(function(a,b){return a.name.localeCompare(b.name); });

请注意，这不会考虑大写（所以它会先订购以大写字母开头的所有名字所有那些以小号开头的，即Z<a），所以你可能会发现它与添加 toUpperCase（）相关在那里。

Be aware that this will not take capitalisation into account (so it will order all names beginning with capitals before all those beginning with smalls, i.e. "Z" < "a"), so you might find it relevant to add a toUpperCase() in there.

你也可以使它更通用：

function sortFactory(prop) {
   return function(a,b){ return a[prop].localeCompare(b[prop]); };
}

obj.sort(sortFactory('name')); // sort by name property
obj.sort(sortFactory('surname')); // sort by surname property

如果你将比较器传递给工厂，那就更通用了......

And even more generic if you pass the comparator to the factory...

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