通过JavaScript中的id属性搜索复杂的对象
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（必要时为“id”键值对）。然后，该函数应返回包含所查询键/值对的整个子对象。
示例
为此的代码将是-
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));输出结果
控制台中的输出将是-
{
id: 1002,
fieldName: 'Sample Child 2',
fieldValue: '1002',
subList: []
}