		@@ -119,3 +119,3 @@ <img src="deepdash.svg?sanitize=true" width="64px"/>
		obj, // The object to iterate over
		iteratee=_.identity, // The function invoked per iteration
		iteratee=_.identity, // The function invoked per iteration. Return `false` explicitly to skip children of current node.
		options={
		@@ -140,3 +140,3 @@ track: false /* track parents from current back to the root,
		);
		return false;
		return false; // if `false` returned explicitly, children of current `value` will be skipped.
		}
		@@ -143,0 +143,0 @@ //do your things

test/stackoverflow.js

		@@ -58,2 +58,92 @@ 'use strict';
		});
		//https://stackoverflow.com/questions/19483706/javascript-how-to-filter-deep-json-objects
		it('javascript-how-to-filter-deep-json-objects', () => {
		var obj = [
		{
		title: 'category 1',
		children: [
		{
		title: 'subcategory 11',
		children: [
		{ id: 1, title: 'name 1' },
		{ id: 2, title: 'name 2' },
		{ id: 3, title: 'name 3' },
		],
		},
		{ title: 'subcategory 12', children: [{ id: 1, title: 'name 4' }] },
		],
		},
		{
		title: 'category 2',
		children: [
		{
		title: 'subcategory 21',
		children: [
		{ id: 3, title: 'name cat2sub1id3' },
		{ id: 5, title: 'name cat2sub1id5' },
		],
		},
		{
		title: 'subcategory 22',
		children: [
		{ id: 6, title: 'name cat2sub2id6' },
		{ id: 7, title: 'name cat2sub2id7' },
		],
		},
		],
		},
		];
		var idList = [2, 3];
		// We will need 2 passes, first - to collect needed 'id' nodes:
		var foundIds = _.filterDeep(
		obj,
		function(value, key) {
		if (key == 'id' && _.indexOf(idList, value) !== -1) return true;
		},
		// we need to disable condensing this time to keep all the paths in result object matching source,
		// otherwise array indexes may be changed and we will not find correct values in the source object later.
		{ condense: false }
		);
		// second pass - to put missed 'title' nodes both for found ids and their parents.
		var filtrate = _.filterDeep(obj, function(
		value,
		key,
		path,
		depth,
		parent,
		parentKey,
		parentPath
		) {
		if (
		_.has(foundIds, path) \|\|
		(key == 'title' && _.has(foundIds, parentPath))
		)
		return true;
		});
		expect(filtrate).to.deep.equal([
		{
		title: 'category 1',
		children: [
		{
		title: 'subcategory 11',
		children: [
		{ title: 'name 1' },
		{ id: 2, title: 'name 2' },
		{ id: 3, title: 'name 3' },
		],
		},
		],
		},
		{
		title: 'category 2',
		children: [
		{
		title: 'subcategory 21',
		children: [{ id: 3, title: 'name cat2sub1id3' }],
		},
		],
		},
		]);
		// console.log(filtrate);
		});
		});

deepdash - npm Package Compare versions

New alerts

Fixed alerts

Improved metrics