[英]How to access nested key on object with array JavaScript?
我想進行層次角色布局。 所以我想在 object 中訪問嵌套的 JavaScript 數組。 需要在每個基於 object 的深度和索引中添加“行”和“列”鍵。
API 響應數組如下:
const dataArray = [
{
name: "master name",
child: [
{
name: "child 1a",
child: [
{ name: "child 1a2a" },
{
name: "child 1a2b",
child: [
{ name: "child 2b3a" },
{
name: "child 2b3b",
child: [
{ name: "child 3b4a" },
{ name: "child 3b4b" },
{ name: "child 3b4c" },
],
},
{ name: "child 2b3c" },
],
},
{ name: "child 1a2c" },
],
},
{
name: "child 1b",
child: [
{ name: "child 1b2a" },
{ name: "child 1b2b" },
{ name: "child 1b2c" },
],
},
],
},
];
這是我嘗試過的,行鍵添加了以下代碼,需要列的幫助
const assignDepth = (arr, row = 0, index = 0) => {
if (index < arr.length) {
arr[index].row = row;
if (arr[index].hasOwnProperty("child")) {
return assignDepth(arr[index].child, row + 1, 0);
}
return assignDepth(arr, row, index + 1);
}
return;
};
await assignDepth(dataArray);
console.log(JSON.stringify(dataArray, undefined, 4));
那么我的預期結果數組是:
const resultArray = [
{
name: "master name",
row: 0,
column: 0,
child: [
{
name: "child 1a",
row: 1,
column: 1,
child: [
{ name: "child 1a2a", row: 2, column: 1 },
{
name: "child 1a2b",
row: 2,
column: 2,
child: [
{ name: "child 2b3a", row: 3, column: 1 },
{
name: "child 2b3b",
row: 3,
column: 2,
child: [
{ name: "child 3b4a", row: 4, column: 1 },
{ name: "child 3b4b", row: 4, column: 2 },
{ name: "child 3b4c", row: 4, column: 3 },
],
},
{ name: "child 2b3c", row: 3, column: 3 },
],
},
{ name: "child 1a2c", row: 2, column: 3 },
],
},
{
name: "child 1b",
row: 1,
column: 2,
child: [
{ name: "child 1b2a", row: 2, column: 4 },
{ name: "child 1b2b", row: 2, column: 5 },
{ name: "child 1b2c", row: 2, column: 6 },
],
},
],
},
];
那么我該如何渲染這個,任何人都可以幫助我。 提前致謝!
你可以試試下面的邏輯:
var ranking = {0:0};
let addRowColumn = (data,row=0) =>{
data.forEach(item=>{
item.row = row;
item.column = ranking[row];
ranking[row]+=1;
if(item.child && item.child.length){
ranking[row+1] = ranking[row+1] || 1;
addRowColumn(item.child,row+1);
}
});
};
addRowColumn(dataArray);
console.log(dataArray);
這是經過測試的。 您可以更改排名 object 以從特定行和列開始。 object的key代表行,value代表數據的列。
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