javascript - 如何使用 javascript 过滤复杂的 json 对象？

Question

我有以下 json 对象:

var json = {
    "Lofts": "none",
    "Maisons": "2",
    "HOMES": [{
        "home_id": "1",
        "price": "925",
        "num_of_beds": "2"
    }, {
        "home_id": "2",
        "price": "1425",
        "num_of_beds": "4",
    }, {
        "home_id": "3",
        "price": "333",
        "num_of_beds": "5",
    }]
};

如何过滤此对象并保留 home_id = 2 的 HOMES 属性？

结果:

var json = {
    "Lofts": "none",
    "Maisons": "2",
    "HOMES": [{
        "home_id": "2",
        "price": "1425",
        "num_of_beds": "4",
    }]
};

有什么方法可以循环对象并管理所有属性(还有阁楼和房屋)？

谢谢

Answer 1

您可以使用Array#filter并将结果直接分配给属性HOMES。

var json = { "Lofts": "none", "Maisons": "2", "HOMES": [{ "home_id": "1", "price": "925", "num_of_beds": "2" }, { "home_id": "2", "price": "1425", "num_of_beds": "4", }, { "home_id": "3", "price": "333", "num_of_beds": "5", }] };

json.HOMES = json.HOMES.filter(function (a) {
    return a.home_id === '2';
});

document.write('<pre>' + JSON.stringify(json, 0, 4) + '</pre>');