在 JavaScript 中通过 id 属性搜索复杂对象
javascriptweb developmentfront end technologyobject oriented programming
假设我们有一个像这样的复杂 JSON 对象 −
const obj = {
"id": "0001",
"fieldName": "sample1",
"fieldValue" "0001",
"subList": [
{
"id": 1001,
"fieldName": "Sample Child 1",
"fieldValue": "1001",
"subList": []
},
{
"id": 1002,
"fieldName": "Sample Child 2",
"fieldValue": "1002",
"subList": []
}
]
}
我们需要编写一个 JavaScript 函数，该函数接受一个这样的对象和一个键值对(必须是"id"键值对)。然后，该函数应返回包含查询的键/值对的整个子对象。
示例
其代码为 −
const obj = {
"id": "0001",
"fieldName": "sample1",
"fieldValue": "0001",
"subList": [
{
"id": 1001,
"fieldName": "Sample Child 1",
"fieldValue": "1001",
"subList": []
},
{
"id": 1002,
"fieldName": "Sample Child 2",
"fieldValue": "1002",
"subList": []
}
]
}
function searchById(searchKey, obj) {
let key = Object.keys(searchKey)[0];
let res;
if (obj[key] === searchKey[key]) {
return obj;
};
obj.subList.some(function (a) {
res = searchById(searchKey, a);
return res;
});
return res;
}
console.log(searchById({id: 1002}, obj));
输出
控制台中的输出将是 −
{
id: 1002,
fieldName: 'Sample Child 2',
fieldValue: '1002',
subList: []
}
