为了在 React 中正确显示 TreeView ,我需要过滤一个嵌套的树对象。
我找到这篇文章: filter nested tree object without losing structure
但实际上我想做的恰恰相反。
例如,如果在我的 filterData 函数 name === "a3
"中,我想使用 name === "a3"
const result = filterData(items, "a3")
const items = [
{
name: "a1",
id: 1,
children: [
{
name: "a2",
id: 2,
children: [
{
name: "a3",
id: 3
},
{
name: "a5",
id: 4
}
]
}
]
},
{
name: "b2",
id: 2,
children: [
{
name: "a2",
id: 2,
children: [
{
name: "a3",
id: 3
}
]
},
{
name: "a4",
id: 8
}
]
}
];
const result = [
{
name: "a1",
id: 1,
children: [
{
name: "a2",
id: 2,
children: [
{
name: "a3",
id: 3
}
]
}
]
},
{
name: "b2",
id: 2,
children: [
{
name: "a2",
id: 2,
children: [
{
name: "a3",
id: 3
}
]
}
]
}
];
最佳答案
您可以在不改变给定数据和减少数组的情况下创建新对象。
function filter(array, name) {
return array.reduce((r, { children = [], ...o }) => {
if (o.name === name) {
r.push(o);
return r;
}
children = filter(children, name);
if (children.length) {
r.push(Object.assign(o, { children }));
}
return r;
}, []);
}
var items = [{ name: "a1", id: 1, children: [{ name: "a2", id: 2, children: [{ name: "a3", id: 3 }, { name: "a5", id: 4 }] }] }, { name: "b2", id: 2, children: [{ name: "a2", id: 2, children: [{ name: "a3", id: 3 }] }, { name: "a4", id: 8 }] }];
console.log(filter(items, "a2"));
console.log(filter(items, "a3"));
.as-console-wrapper { max-height: 100% !important; top: 0; }
关于javascript - 如何在不丢失 javascript 结构的情况下过滤嵌套树对象?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57218449/