javascript - 对对象数组中的嵌套数组进行排序

Question

我不知道为什么，但排序是编程中每次都让我困惑的事情之一......

我想在第一级对数组成员进行排序，以便所有具有属性 licence: "truck"和 active: true 的成员首先出现在列表中。那么下一个成员应该是所有拥有许可证:“汽车”且活跃:true

的成员

underscore.js 可用...

[
        {
            name: 'Denes',
            properties: [
                {
                    licence: "car",
                    active: true
                },
                {
                    licence: "truck",
                    active: false
                },
            ]
        },
        {
            name: 'Patrick',
            properties: [
                {
                    licence: "car",
                    active: false
                },
                {
                    licence: "truck",
                    active: true
                },
            ]
        },
        {
            name: 'Marc',
            properties: [
                {
                    licence: "car",
                    active: false
                },
                {
                    licence: "truck",
                    active: false
                },
            ]
        }
    ]

预期结果:

[

        {
            name: 'Patrick',
            properties: [
                {
                    licence: "car",
                    active: false
                },
                {
                    licence: "truck",
                    active: true
                },
            ]
        },
        {
            name: 'Denes',
            properties: [
                {
                    licence: "car",
                    active: true
                },
                {
                    licence: "truck",
                    active: false
                },
            ]
        },
        {
            name: 'Marc',
            properties: [
                {
                    licence: "car",
                    active: false
                },
                {
                    licence: "truck",
                    active: false
                },
            ]
        }
    ]

Answer 1

试试这个:

function comparator(){
    return function(a, b){
        return weightage(b)- weightage(a);
    }
};

function weightage(obj){
    var maxWeight = -1;
    for (var i in obj.properties){
        if(obj.properties[i].licence == 'truck' && obj.properties[i].active) {
            maxWeight = 1;
            return maxWeight;
        } else if (obj.properties[i].licence == 'car' && obj.properties[i].active) {
            maxWeight = 0;
        }
    }
    return maxWeight;
};

假设您的数组名为: arr 调用 arr.sort(comparator()) 。希望这能解决您的疑问..:)