如何从父-子json数据中使用id搜索节点值
如何从父-子json数据中使用id搜索节点值
提问于 2022-03-27 09:44:23
我有一个基于父子json的数据
[
{
"_id":"624015bb69f627d1d3484b06",
"name":"11111",
"created":"2022-03-27T07:36:50.492Z",
"children":[
{
"_id":"624015c369f627d1d3484b0b",
"name":"222222",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624015bb69f627d1d3484b06",
"path":"624015bb69f627d1d3484b06,624015c369f627d1d3484b0b",
"__v":0
},
{
"_id":"624015d069f627d1d3484b10",
"name":"333333",
"created":"2022-03-27T07:36:50.492Z",
"children":[
{
"_id":"6240161269f627d1d3484b15",
"name":"444444",
"created":"2022-03-27T07:36:50.492Z",
"children":[
{
"_id":"624021be69f627d1d3484b1f",
"name":"5555555",
"created":"2022-03-27T07:36:50.492Z",
"children":[
{
"_id":"624021cc69f627d1d3484b24",
"name":"555551111",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624021be69f627d1d3484b1f",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f,624021cc69f627d1d3484b24",
"__v":0
},
{
"_id":"624021d569f627d1d3484b29",
"name":"555552222",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624021be69f627d1d3484b1f",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f,624021d569f627d1d3484b29",
"__v":0
},
{
"_id":"624021de69f627d1d3484b2e",
"name":"555553333",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624021be69f627d1d3484b1f",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f,624021de69f627d1d3484b2e",
"__v":0
},
{
"_id":"624021eb69f627d1d3484b33",
"name":"555554444",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624021be69f627d1d3484b1f",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f,624021eb69f627d1d3484b33",
"__v":0
},
{
"_id":"624021f469f627d1d3484b38",
"name":"555555555",
"created":"2022-03-27T07:36:50.492Z",
"children":[
],
"parent":"624021be69f627d1d3484b1f",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f,624021f469f627d1d3484b38",
"__v":0
}
],
"parent":"6240161269f627d1d3484b15",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15,624021be69f627d1d3484b1f",
"__v":0
}
],
"parent":"624015d069f627d1d3484b10",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10,6240161269f627d1d3484b15",
"__v":0
}
],
"parent":"624015bb69f627d1d3484b06",
"path":"624015bb69f627d1d3484b06,624015d069f627d1d3484b10",
"__v":0
}
],
"parent":null,
"path":"624015bb69f627d1d3484b06",
"__v":0
}
]我想通过搜索它的_id值来搜索结束叶节点，例如，我想找到id为'624021f469f627d1d3484b38‘的叶节点，它应该输出名为'55555555’的整个节点值，
我尝试过以下方法。
const find = (array, id) => {
var result;
array.some(o => result = o._id === id ? o : find(o.children || [], id));
return result;
};
const findChildById = (arr, id) => {
const result = arr.find(o => o._id === id)
if (result) return result
for (const cm of arr) {
const result = cm.children.find(o => o._id === id)
if (result) return result
}
}
let node = find( nodeData, '624021f469f627d1d3484b38');
let node = findChildById( nodeData, '624021f469f627d1d3484b38');但这两种方法都输出未定义的
回答 1
Stack Overflow用户
回答已采纳
发布于 2022-03-27 14:01:18
const findChildren = (arrElement, matchingID) => {
if (arrElement._id === matchingID) {
return arrElement;
} else if (arrElement.children.length) {
let children = null;
arrElement.children.forEach(element => {
children = findChildren(element, matchingID);
});
return children;
}
return null;
};
console.log(findChildren(arrayChildren[0], '624021f469f627d1d3484b38'));页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/71635243
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