reorganize array to array of arrays with javascript

Question

I was trying to insert arrays into array, for example I have

var objList = [
  {
    name: jack,
    status: ''
  },
  {
    name: mark,
    status: yes
  },
  {
    name: erik, 
    status: no
  },
  {
    name: mike,
    status: yes
  },
  {
    name: chaze,
    status: no
  }
]

what I want is everytime that it finds 'status:yes' it will push it to new array with the following 'status:or'. it would look something like this

[[{name: jack, status: ''}], [{name: mark, status: yes},{name: erik, status: no}], [{name: mike, status: yes},{name: chaze, status: no}]]

What exactly is your problem? Seems like just looping over your array and then applying your logic would simply solve your problem? — ssc-hrep3
– ssc-hrep3, Commented Sep 24, 2018 at 7:30

Nina Scholz · Accepted Answer · 2018-09-24 07:33:04Z

3

You could reduce the array and check if the status is yes, then add a new sub array to the result set. Then just add the object to the last array.

var data = [{ name: 'jack', status: '' }, { name: 'mark', status: 'yes' }, { name: 'erik', status: 'no' }, { name: 'mike', status: 'yes' }, { name: 'chaze', status: 'no' }],
    result = data.reduce((r, o) => {
        if (!r.length || o.status === 'yes') {
            r.push([]);
        }
        r[r.length - 1].push(o);
        return r;
    }, []);

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

answered Sep 24, 2018 at 7:33

Nina Scholz

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2 Comments

user3496013 Over a year ago

thanks, this is what I'm looking for. Will mark it as correct answer :)

Scott Sauyet Over a year ago

It might be cleaner to start with [[]] and skip the length check. I suppose that might not be right if the data is empty, but it certainly feels a bit cleaner.

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