Filter out non null objects from array of objects

Question

I have list of objects in an array. How can i filter out if any one of key property of the object is null/empty. In given example the first record is perfect and the 2nd and 4th record have missing properties. So my ideal output should be 1st & 2nd.

[{
        "ServiceArea": "NON-CIO",
        "ManagingDirector": "qwe",
        "Lead": "abc",
        "Manager": "xyz"
        "id":"1",
        "Designation":"COO"
    },
    {
        "ServiceArea": "NON-CIO",
        "ManagingDirector": "dfg",
        "Lead": "",
        "Manager": "lkj"
        "id":"2",
        "Designation":"CTO"
    },
    {
        "ServiceArea": "NON-CIO",
        "ManagingDirector": "out",
        "Lead": "poi",
        "Manager": "",
        "id":"43",
        "Designation":"COO"
    },
    {
        "ServiceArea": "4500-CIO",
        "ManagingDirector": "yhh",
        "Lead": "trr",
        "Manager": "nbb"
        "id":"403",
        "Designation":"CTO"
    }
]

Spectric · Accepted Answer · 2022-12-17 20:17:20Z

2

Use Array.filter, then use Array.every to check whether every value is truthy.

const arr=[{ServiceArea:"NON-CIO",ManagingDirector:"qwe",Lead:"abc",Manager:"xyz",id:"1",Designation:"COO"},{ServiceArea:"NON-CIO",ManagingDirector:"dfg",Lead:"",Manager:"lkj",id:"2",Designation:"CTO"},{ServiceArea:"NON-CIO",ManagingDirector:"out",Lead:"poi",Manager:"",id:"43",Designation:"COO"},{ServiceArea:"4500-CIO",ManagingDirector:"yhh",Lead:"trr",Manager:"nbb",id:"403",Designation:"CTO"}];

const res = arr.filter(e => Object.values(e).every(k => !!k))
console.log(res)

If you want to filter by specific keys, you can store the keys in an array and use Array.every to check if all values are truthy.

const arr=[{ServiceArea:"NON-CIO",ManagingDirector:"qwe",Lead:"abc",Manager:"xyz",id:"1",Designation:"COO"},{ServiceArea:"NON-CIO",ManagingDirector:"dfg",Lead:"",Manager:"lkj",id:"2",Designation:"CTO"},{ServiceArea:"NON-CIO",ManagingDirector:"out",Lead:"poi",Manager:"",id:"43",Designation:"COO"},{ServiceArea:"4500-CIO",ManagingDirector:"yhh",Lead:"trr",Manager:"nbb",id:"403",Designation:"CTO"}];

const keys = ["Lead"]
const res = arr.filter(e => keys.every(k => !!e[k]))
console.log(res)

edited Dec 17, 2022 at 20:17

answered Dec 17, 2022 at 20:07

Spectric

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4 Comments

Rahul Jain Over a year ago

Any way where i can also specify the keys also? Like only manager and lead is null/empty.

jsejcksn Over a year ago

The current code only checks for empty strings, which is not what was asked in the question: "How can i filter out if any one of key property of the object is null/empty"

Spectric Over a year ago

@jsejcksn Good call! I've updated my answer to check for truthiness.

jsejcksn Over a year ago

^ @Spectric Truthiness is also not what was asked in the question: other falsy values (e.g. the integer 0) are not null and also not an empty string. The question asked specifically about those two cases.

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