javascript - 从嵌套对象中删除特定对象
问题描述
我正在尝试从嵌套对象中删除特定对象：
这是我正在使用的原始数据和函数：
const allList = [
{
"id": "listGroup",
"condition": "AND",
"data": [
{
"id": "611901",
"name": "1",
"value": "1",
"data": "6137",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190158"
},
{
"id": "listGroup_1",
"children": {
"key": null,
"ref": null,
"props": {
"children": {
"type": "div",
"key": null,
"ref": null,
"props": {
"style": {
"display": "flex",
"boxSizing": "border-box"
},
"children": [
{
"type": {
"propTypes": {},
"defaultProps": {
"id": null,
"children": null,
"className": null,
"disabled": false,
"required": false,
"options": [],
"multiple": false,
"placeholder": null,
"error": null,
"onChange": null,
"display": "pillBelow",
"invert": false
},
"ComponentName": "Dropdown",
"package": "@publicismedia-ds/ui-dropdown",
"version": "2.1.0"
},
"key": null,
"ref": null,
"props": {
"options": [
{
"label": "AND",
"value": "AND"
},
{
"label": "OR",
"value": "OR"
},
{
"label": "AND NOT",
"value": "AND NOT"
},
{
"label": "OR NOT",
"value": "OR NOT"
}
],
"value": {
"label": "AND",
"value": "AND"
},
"children": " ",
"id": null,
"className": null,
"disabled": false,
"required": false,
"multiple": false,
"placeholder": null,
"error": null,
"display": "pillBelow",
"invert": false
},
"_owner": null,
"_store": {}
},
{
"type": {
"propTypes": {},
"defaultProps": {
"className": "",
"list": null,
"onChange": null,
"id": "",
"selectAll": false,
"placeholder": "Drop keys here",
"children": null,
"allowDuplicates": true,
"allowed": null,
"notAllowed": null,
"border": false,
"removeDraggedItems": true,
"reorder": true,
"deleteItem": false,
"errorMessage": "Not allowed",
"onDragStart": null,
"onDrop": null,
"__TYPE": "DragDrop"
},
"componentName": "DragDrop",
"package": "@publicismedia-ds/ui-drag-drop",
"version": "2.2.0-beta.1"
},
"key": null,
"ref": null,
"props": {
"list": {
"id": "listGroup_1",
"condition": "OR",
"data": [
{
"id": "611908",
"name": "4",
"value": "4",
"data": "432",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190834"
}
]
},
"id": "listGroup_1",
"selectAll": false,
"placeholder": "Drop keys here",
"deleteItem": true,
"border": true,
"allowDuplicates": false,
"errorMessage": "Not allowed!",
"className": "",
"children": null,
"allowed": null,
"notAllowed": null,
"removeDraggedItems": true,
"reorder": true,
"onDragStart": null,
"onDrop": null,
"__TYPE": "DragDrop"
},
"_owner": null,
"_store": {}
}
]
},
"_owner": null,
"_store": {}
}
},
"_owner": null,
"_store": {}
},
"uniqueId": "pmds-dragdrop__listGroup_159"
}
]
},
{
"id": "listGroup_1",
"condition": "OR",
"data": [
{
"id": "611908",
"name": "4",
"value": "4",
"data": "432",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190834"
}
]
}
]
console.log(allList);
function filterObject(obj, key) {
for (var i in obj) {
if (!obj.hasOwnProperty(i)) continue;
if (i == key) {
delete obj[key];
} else if (typeof obj[i] == "object") {
filterObject(obj[i], key);
}
}
return obj;
}
console.log(filterObject(allList, "children"));我想删除所有带有“children”键的对象，并且我正在使用一个名为“filterObject”的递归函数。我不得不说该功能工作正常。
但我也想保留原始对象，但我不知道该怎么做。我希望你能帮助我
解决方案
你的答案
const allList = [
{
"id": "listGroup",
"condition": "AND",
"data": [
{
"id": "611901",
"name": "1",
"value": "1",
"data": "6137",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190158"
},
{
"id": "listGroup_1",
"children": {
"key": null,
"ref": null,
"props": {
"children": {
"type": "div",
"key": null,
"ref": null,
"props": {
"style": {
"display": "flex",
"boxSizing": "border-box"
},
"children": [
{
"type": {
"propTypes": {},
"defaultProps": {
"id": null,
"children": null,
"className": null,
"disabled": false,
"required": false,
"options": [],
"multiple": false,
"placeholder": null,
"error": null,
"onChange": null,
"display": "pillBelow",
"invert": false
},
"ComponentName": "Dropdown",
"package": "@publicismedia-ds/ui-dropdown",
"version": "2.1.0"
},
"key": null,
"ref": null,
"props": {
"options": [
{
"label": "AND",
"value": "AND"
},
{
"label": "OR",
"value": "OR"
},
{
"label": "AND NOT",
"value": "AND NOT"
},
{
"label": "OR NOT",
"value": "OR NOT"
}
],
"value": {
"label": "AND",
"value": "AND"
},
"children": " ",
"id": null,
"className": null,
"disabled": false,
"required": false,
"multiple": false,
"placeholder": null,
"error": null,
"display": "pillBelow",
"invert": false
},
"_owner": null,
"_store": {}
},
{
"type": {
"propTypes": {},
"defaultProps": {
"className": "",
"list": null,
"onChange": null,
"id": "",
"selectAll": false,
"placeholder": "Drop keys here",
"children": null,
"allowDuplicates": true,
"allowed": null,
"notAllowed": null,
"border": false,
"removeDraggedItems": true,
"reorder": true,
"deleteItem": false,
"errorMessage": "Not allowed",
"onDragStart": null,
"onDrop": null,
"__TYPE": "DragDrop"
},
"componentName": "DragDrop",
"package": "@publicismedia-ds/ui-drag-drop",
"version": "2.2.0-beta.1"
},
"key": null,
"ref": null,
"props": {
"list": {
"id": "listGroup_1",
"condition": "OR",
"data": [
{
"id": "611908",
"name": "4",
"value": "4",
"data": "432",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190834"
}
]
},
"id": "listGroup_1",
"selectAll": false,
"placeholder": "Drop keys here",
"deleteItem": true,
"border": true,
"allowDuplicates": false,
"errorMessage": "Not allowed!",
"className": "",
"children": null,
"allowed": null,
"notAllowed": null,
"removeDraggedItems": true,
"reorder": true,
"onDragStart": null,
"onDrop": null,
"__TYPE": "DragDrop"
},
"_owner": null,
"_store": {}
}
]
},
"_owner": null,
"_store": {}
}
},
"_owner": null,
"_store": {}
},
"uniqueId": "pmds-dragdrop__listGroup_159"
}
]
},
{
"id": "listGroup_1",
"condition": "OR",
"data": [
{
"id": "611908",
"name": "4",
"value": "4",
"data": "432",
"path": "Automotive Miscellaneous>Car Rental - Personal Use>Times/Last 12 Months",
"uniqueId": "pmds-dragdrop__61190834"
}
]
}
]
function filterObject(obj, key) {
for (var i in obj) {
if (!obj.hasOwnProperty(i)) continue;
if (i == key) {
delete obj[key];
} else if (typeof obj[i] == "object") {
filterObject(obj[i], key);
}
}
return obj;
}
const filtered = filterObject(JSON.parse(JSON.stringify(allList)), "children")
console.log(filtered)
console.log(allList);你在做什么
const arr = [1,2,3];
const arr2 = arr.reverse();
console.log(arr);
console.log(arr2)你需要什么
您必须复制数组而不是引用数组
const arr = [1,2,3];
const arr2 = [...arr].reverse();
console.log(arr);
console.log(arr2)但在你的情况下，它不会起作用，为什么
因为扩展运算符创建一个浅拷贝意味着所有深层对象都连接在复制的数组和原始数组之间
方法二
const arr = [1,2,3];
const arr2 = JSON.parse(JSON.stringify(arr)).reverse();
console.log(arr);
console.log(arr2)推荐阅读
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