我有一個類似于下面的物件：
const obj = {
"test1": {
"test12": "val1",
"test13": {
"test131": "val1",
"test132": "val2"
}
},
"test2": "val2"
}
我想按如下方式接收密鑰：
const keys = [["test1", "test12", "test13", "test131", "test132"], ["test2"]];
uj5u.com熱心網友回復：
您可以遞回處理物件中的條目，隨時收集鍵并在除頂部之外的所有級別展平結果陣列：
const obj = {
"test1": {
"test12": "val1",
"test13": {
"test131": "val1",
"test132": "val2"
}
},
"test2": null,
"test3": {
"test31": "val3"
},
"test4": {
"test41": [1, 2, 3, 4]
}
}
const getKeys = (obj, flat = false) => {
const keys = Object.entries(obj)
.map(([k, v]) => v instanceof Object && !(v instanceof Array) ? [k, ...getKeys(v, true)] : [k])
return flat ? keys.flat() : keys
}
const allKeys = getKeys(obj)
console.log(allKeys)uj5u.com熱心網友回復：
干得好：
const obj = {
"test1": {
"test12": "val1",
"test13": {
"test131": "val1",
"test132": "val2"
}
},
"test2": "val2"
};
const mapToKeys = ([key, value]) => {
if (Object.prototype.toString.call(value) === '[object Object]') {
return [key, ...getKeys(value)];
}
return [key];
};
const getKeys = (o) => Object.entries(o).flatMap(mapToKeys);
const keys = Object.entries(obj).map(mapToKeys);
console.log(keys);轉載請註明出處，本文鏈接：https://www.uj5u.com/ruanti/507568.html
標籤：javascript 数组 目的