排序（更多）复杂的对象数组
由于您可能会遇到像这个数组这样更复杂的数据结构，我将扩展解决方案。
TL;DR
基于@ege-Özcan的很可爱的answer的更可插拔的版本。
问题
我遇到了以下问题，无法更改。我也不想暂时压平物体。我也不想使用下划线/lodash，主要是出于性能原因和自己实现它的乐趣。
var People = [
{Name: {name: "Name", surname: "Surname"}, Middlename: "JJ"},
{Name: {name: "AAA", surname: "ZZZ"}, Middlename:"Abrams"},
{Name: {name: "Name", surname: "AAA"}, Middlename: "Wars"}
];
目标
目标是主要按People.Name.name排序，其次按People.Name.surname排序
障碍
现在，在基本解决方案中，使用括号表示法来计算要动态排序的属性。但是，在这里，我们还必须动态地构造括号符号，因为您会期望像 People['Name.name'] 这样的东西会起作用 - 但事实并非如此。
另一方面，简单地执行People['Name']['name'] 是静态的，只允许您下降到第 n 层。
解决方案
这里的主要补充是遍历对象树并确定最后一个叶子的值，你必须指定，以及任何中间叶子。
var People = [
{Name: {name: "Name", surname: "Surname"}, Middlename: "JJ"},
{Name: {name: "AAA", surname: "ZZZ"}, Middlename:"Abrams"},
{Name: {name: "Name", surname: "AAA"}, Middlename: "Wars"}
];
People.sort(dynamicMultiSort(['Name','name'], ['Name', '-surname']));
// Results in...
// [ { Name: { name: 'AAA', surname: 'ZZZ' }, Middlename: 'Abrams' },
// { Name: { name: 'Name', surname: 'Surname' }, Middlename: 'JJ' },
// { Name: { name: 'Name', surname: 'AAA' }, Middlename: 'Wars' } ]
// same logic as above, but strong deviation for dynamic properties
function dynamicSort(properties) {
var sortOrder = 1;
// determine sort order by checking sign of last element of array
if(properties[properties.length - 1][0] === "-") {
sortOrder = -1;
// Chop off sign
properties[properties.length - 1] = properties[properties.length - 1].substr(1);
}
return function (a,b) {
propertyOfA = recurseObjProp(a, properties)
propertyOfB = recurseObjProp(b, properties)
var result = (propertyOfA < propertyOfB) ? -1 : (propertyOfA > propertyOfB) ? 1 : 0;
return result * sortOrder;
};
}
/**
* Takes an object and recurses down the tree to a target leaf and returns it value
* @param {Object} root - Object to be traversed.
* @param {Array} leafs - Array of downwards traversal. To access the value: {parent:{ child: 'value'}} -> ['parent','child']
* @param {Number} index - Must not be set, since it is implicit.
* @return {String|Number} The property, which is to be compared by sort.
*/
function recurseObjProp(root, leafs, index) {
index ? index : index = 0
var upper = root
// walk down one level
lower = upper[leafs[index]]
// Check if last leaf has been hit by having gone one step too far.
// If so, return result from last step.
if (!lower) {
return upper
}
// Else: recurse!
index++
// HINT: Bug was here, for not explicitly returning function
// https://stackoverflow.com/a/17528613/3580261
return recurseObjProp(lower, leafs, index)
}
/**
* Multi-sort your array by a set of properties
* @param {...Array} Arrays to access values in the form of: {parent:{ child: 'value'}} -> ['parent','child']
* @return {Number} Number - number for sort algorithm
*/
function dynamicMultiSort() {
var args = Array.prototype.slice.call(arguments); // slight deviation to base
return function (a, b) {
var i = 0, result = 0, numberOfProperties = args.length;
// REVIEW: slightly verbose; maybe no way around because of `.sort`-'s nature
// Consider: `.forEach()`
while(result === 0 && i < numberOfProperties) {
result = dynamicSort(args[i])(a, b);
i++;
}
return result;
}
}
示例
工作示例on JSBin