JSON对象字符串数组多字段（多列）排序-蒲公英云

JSON对象字符串数组多字段（多列）排序

JSON对象字符串数组，多字段（多列）排序

今天看到我写的另一篇JSON对象数组排序的文章，突然想到了另一种，更简便，更快速的方法，排序结果跟原来的一样：

function newSort(objArr, keyArr, type) {
    objArr.sort(function (objA, objB) {
        for (let i = 0; i < keyArr.length; i++) {
            var key = keyArr[i];
            if (objA[key] === objB[key]) {
                continue;
            }
            if (type === 'desc') {
                return objA[key] < objB[key];
            } else {
                return objA[key] > objB[key];
            }
        }
    });
    return objArr;
}

// 测试数据

var arr = [
    {
        name: 'titanic',
        addr: 'americ',
        type: 'film',
        size: 1024
    },
    {
        name: 'hunting',
        addr: 'china',
        type: 'tv',
        size: 10240
    },
    {
        name: 'drunken',
        addr: 'china',
        type: 'film',
        size: 2048
    },
    {
        name: 'lifetimes',
        addr: 'china',
        type: 'tv',
        size: 20
    },
    {
        name: 'lifetimes',
        addr: 'china',
        type: 'tv',
        size: 2
    },
    {
        name: 'lifetimes',
        addr: 'americ',
        type: 'tv',
        size: 204
    },
    {
        name: 'lifetimes',
        addr: 'americ',
        type: 'film',
        size: 20480
    }
];
var newSort = newSort(JSON.parse(JSON.stringify(arr)), ['name', 'addr', 'type', 'size'], 'desc');
console.log('排序前：');
console.log(arr);
console.log('新排序：');
console.log(newSort);

打印结果

排序前：
[ { name: ‘titanic’, addr: ‘americ’, type: ‘film’, size: 1024 },
{ name: ‘hunting’, addr: ‘china’, type: ‘tv’, size: 10240 },
{ name: ‘drunken’, addr: ‘china’, type: ‘film’, size: 2048 },
{ name: ‘lifetimes’, addr: ‘china’, type: ‘tv’, size: 20 },
{ name: ‘lifetimes’, addr: ‘china’, type: ‘tv’, size: 2 },
{ name: ‘lifetimes’, addr: ‘americ’, type: ‘tv’, size: 204 },
{ name: ‘lifetimes’, addr: ‘americ’, type: ‘film’, size: 20480 } ]
新排序：
[ { name: ‘titanic’, addr: ‘americ’, type: ‘film’, size: 1024 },
{ name: ‘lifetimes’, addr: ‘china’, type: ‘tv’, size: 20 },
{ name: ‘lifetimes’, addr: ‘china’, type: ‘tv’, size: 2 },
{ name: ‘lifetimes’, addr: ‘americ’, type: ‘tv’, size: 204 },
{ name: ‘lifetimes’, addr: ‘americ’, type: ‘film’, size: 20480 },
{ name: ‘hunting’, addr: ‘china’, type: ‘tv’, size: 10240 },
{ name: ‘drunken’, addr: ‘china’, type: ‘film’, size: 2048 } ]