我有一个父对象数组，在这样的结构中有嵌套的子数组：
[
{
"fullName": "Certificate",
"checked": false,
"children": [
{
"type": "Certificate",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Certificate-1",
}
]
},
{
"fullName": "InstalledPackage", "checked": false, "children": [ { "type": "InstalledPackage", "lastModifiedDate": "1971-01-01T00:00:00.000Z", "fullName": "Package1", } ] }, { "fullName": "InstalledPackage", "checked": false, "children": [ { "type": "InstalledPackage", "lastModifiedDate": "1971-01-01T00:00:00.000Z", "fullName": "Package2", } ] },
{
"fullName": "Network",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Network1",
}
]
}
]
我想在将孩子们推到一起的同时将任何父节点与相同的'fullName'合并。所需的输出是：
[
{
"fullName": "Certificate",
"checked": false,
"children": [
{
"type": "Certificate",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Certificate-1",
}
]
},
{
"fullName": "InstalledPackage", "checked": false, "children": [ { "type": "InstalledPackage", "lastModifiedDate": "1971-01-01T00:00:00.000Z", "fullName": "Package1", }, { "type": "InstalledPackage", "lastModifiedDate": "1971-01-01T00:00:00.000Z", "fullName": "Package2", } ] },
{
"fullName": "Network",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Network1",
}
]
}
]
有没有一种优雅的方法来达到这个目标（使用lodash或其他方式）？我已根据找到的答案here尝试了许多循环解决方案，但我无法做到这一点。有什么想法吗？
@Andy，我尝试的大部分代码都基于超链接中的答案，一个看起来很有希望的尝试是：function mergeNames (arr) {
return _.chain(arr).groupBy('fullName').mapValues(function (v) {
return _.chain(v).map('fullName').flattenDeep();
}).value();
}
console.log(mergeNames(array));
但这个输出是“lodash包装”？并且不能正确地将孩子们推到一起 - 我想也许是因为我在孩子和父级都有相同的标识符（fullName）？当我运行此代码并从chrom控制台复制输出时，我得到以下内容：
{
"Certificate": [
"Certificate"
],
"InstalledPackage": [
"InstalledPackage",
"InstalledPackage"
],
"Network": [
"Network"
]
}
答案 0 :(得分：1)
您可以使用Array.prototype这样的方法执行此操作：
let data = [
{
"fullName": "Certificate",
"checked": false,
"children": [
{
"type": "Certificate",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Certificate-1",
}
]
},
{
"fullName": "InstalledPackage",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Package1",
}
]
},
{
"fullName": "InstalledPackage",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Package2",
}
]
},
{
"fullName": "Network",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Network1",
}
]
}
];
let result = data.reduce((res, elem) => {
let arrForChecking = res.filter((el) => el.fullName === elem.fullName);
if (arrForChecking.length) {
arrForChecking[0].children.push(elem.children[0]);
return res;
}
return res = res.concat(elem);
}, []);
console.log(result);
答案 1 :(得分：0)
您可以定义组合分组的键，并在将单个组推送到结果数组时使用组的哈希表。
var array = [{ fullName: "Certificate", checked: false, children: [{ type: "Certificate", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Certificate-1" }] }, { fullName: "InstalledPackage", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Package1" }] }, { fullName: "InstalledPackage", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Package2" }] }, { fullName: "Network", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Network1" }] }],
hash = Object.create(null),
keys = ['fullName', 'checked'],
grouped = [];
array.forEach(function (o) {
var key = keys.map(function (k) { return o[k]; }).join('|');
if (!hash[key]) {
hash[key] = {};
keys.forEach(function (k) { hash[key][k] = o[k]; });
hash[key].children = [];
grouped.push(hash[key]);
}
hash[key].children = hash[key].children.concat(o.children);
});
console.log(grouped);.as-console-wrapper { max-height: 100% !important; top: 0; }
ES6
var array = [{ fullName: "Certificate", checked: false, children: [{ type: "Certificate", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Certificate-1" }] }, { fullName: "InstalledPackage", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Package1" }] }, { fullName: "InstalledPackage", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Package2" }] }, { fullName: "Network", checked: false, children: [{ type: "InstalledPackage", lastModifiedDate: "1971-01-01T00:00:00.000Z", fullName: "Network1" }] }],
hash = Object.create(null),
keys = ['fullName', 'checked'],
grouped = [];
array.forEach(function (o) {
var key = keys.map(k => o[k]).join('|');
if (!hash[key]) {
hash[key] = Object.assign({}, o);
grouped.push(hash[key]);
return;
}
hash[key].children.push(...o.children);
});
console.log(grouped);.as-console-wrapper { max-height: 100% !important; top: 0; }
答案 2 :(得分：0)
你去吧
as = [
{
"fullName": "Certificate",
"checked": false,
"children": [
{
"type": "Certificate",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Certificate-1",
}
]
},
{
"fullName": "InstalledPackage",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Package1",
}
]
},
{
"fullName": "InstalledPackage",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Package2",
}
]
},
{
"fullName": "Network",
"checked": false,
"children": [
{
"type": "InstalledPackage",
"lastModifiedDate": "1971-01-01T00:00:00.000Z",
"fullName": "Network1",
}
]
}
]
ad = []
i=-1
as.forEach(function(item, index){
if(index>0){
i=i+1
if(as[index]['fullName'] === as[i]['fullName']) {
item['children'] = item['children'].concat(as[i]['children'])
ad[ad.length - 1] = item
} else {
ad.push(item)
}
} else {
ad.push(item)
}
})