let list = [
{
key: 1,
title: '一级',
parentKey: 0,
status: { choose: false },
children: [
{
key: 10,
title: '一级-0',
parentKey: 1,
status: { choose: false },
children: [{ key: 15, title: '一级-0-1', parentKey: 10, status: { choose: false } }]
},
{ key: 11, title: '一级-1', parentKey: 1, status: { choose: false } },
{ key: 12, title: '一级-2', parentKey: 1, status: { choose: false } },
{ key: 13, title: '一级-3', parentKey: 1, status: { choose: false } },
{ key: 14, title: '一级-4', parentKey: 1, status: { choose: false } }
]
}
];
function makeRevMap(list, parents) {
const ret = {};
list.reduce((result, item) => {
ret[item.key] = parents.concat(item);
if (Array.isArray(item.children)) {
Object.assign(result, makeRevMap(item.children, parents.concat(item)));
}
}, ret);
return ret;
}
const rev = makeRevMap(list, []);
function choose(key) {
for (const item of rev[key]) {
item.status.choose = true;
}
}
choose(15);
JSON.stringify(list, null, 2);
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