Filtering inner arrays javascript

Question

How do I filter if an array is inside another array?

How should I loop this?

var jobs = [
    {
        'id': '1',
        'departments': [{'name': 'Finance'}],
        'offices': [{'name': 'US'}, {'name': 'Brazil'}]
    },
    {
        'id': '1',
        'departments': [{'name': 'Finance'}],
        'offices': [{'name': 'Paris'}, {'name': 'China'}]
    }
];

var results = jobs.filter(function(o)) {
    return o.offices[0].name == 'US';
} // get office US;

jsFiddle Link

jobs.filter(j => j.offices.some(o => o.name === "US")) Use some to see if one of the objects inside the offices array matches your requirement. — user3297291
– user3297291, Commented Jul 3, 2017 at 10:46

Ori Drori · Accepted Answer · 2017-07-03 10:48:19Z

1

When you want to filter an array by a value that might exist in an internal array, you can use Array#some on the internal array. The method Array#some returns true, and stop iteration, if at least one element of the array meets the criteria.

var jobs = [{"id":"1","departments":[{"name":"Finance"}],"offices":[{"name":"US"},{"name":"Brazil"}]},{"id":"1","departments":[{"name":"Finance"}],"offices":[{"name":"Paris"},{"name":"China"}]}];

var jobsWithoutUs = jobs.filter(function(job) {
  return job.offices.some(function(office) {
    return office.name === 'US';
  });
});

console.log(jobsWithoutUs);

answered Jul 3, 2017 at 10:48

Ori Drori

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