如何通过键对值对对象数组进行排序

Question

我如何使用desireOrder数组中的值对对象数组进行排序？ 我希望按每个对象中的 type 键对数组对象进行排序。我希望所有 fruit 项目先显示，然后显示 drug 项目，然后显示 wheat 项目。等等，如果该功能是可重用的，那将是更可取的。

// This is the order I want myList sorted in by the object property type
let desiredOrder = ['fruit', 'drugs', 'wheat', 'candy', 'vegetable', 'dairy']



// Here is my list of objects
let myList = [
    {
        type: "fruit",
        subType: "apple"
    },
    {
        type: "vegetable",
        subType: "carrot"
    },
    {
        type: "fruit",
        subType: "orange"
    },
    {
        type: "dairy",
        subType: "milk"
    },
    {
        type: "wheat",
        subType: "bread"
    },
    {
        type: "vegetable",
        subType: "lettuce"
    },
    {
        type: "fruit",
        subType: "mango"
    },
    {
        type: "drugs",
        subType: 'cocaine'
    },
    {
        type: "vegetable",
        subType: "spinach"
    },
    {
        type: "candy",
        subType: "chocolate"
    },
    {
        type: "vegetable",
        subType: "celery"
    },
    {
        type: "fruit",
        subType: "pineapple"
    },
]

Answer 1

功能

AKSWebservice

将首先根据数组中类型的顺序进行排序，如果类型相同，则按subType排序。

(a, b) => (desiredOrder.indexOf(a.type) - desiredOrder.indexOf(b.type)) || (a.subType > b.subType ? 1 : -1) || 0;

Answer 2

您需要使用sort()

myList.sort((preItem, nextItem) =>
  desiredOrder.indexOf(preItem.type) > desiredOrder.indexOf(nextItem.type) ? 1 : -1
);