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Weijuer
Weijuer

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# Day 2 | How to resolve it?

#javascript

The problem

let deps = [ {id: 1, name: 'dep1', pid: 0}, {id: 2, name: 'dep2', pid: 1}, {id: 3, name: 'dep3', pid: 1}, {id: 4, name: 'dep4', pid: 3}, {id: 5, name: 'dep5', pid: 4}, ]; let res = formatDeps(deps);
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and the res should be:

[ { "id": 1, "name": "dep1", "pid": 0, "children": [ { "id": 2, "name": "dep2", "pid": 1, "children": [] }, { "id": 3, "name": "dep3", "pid": 1, "children": [ // etc,,, ] } ] } ]
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Top comments (3)

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weijuer profile image
Weijuer •

And for now, I find a slim code to resolve it?

function nest(arr, pid) { return arr.filter(item => item.pid === pid).map(item => ({...item, children: nest(arr, item.id)})) }
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tsxoxo profile image
Tom Szwaja •

Have you tried reduce?

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weijuer profile image
Weijuer •

yep, but to code?