Verifying if properties are empty in an array of objects

I am trying to find out if there is a null value in an array of objects, and return true if there is.

One issue I am facing is:

The current condition always returns 'false' due to the mismatch between types '{ type: any; startDate: string; endDate: string; annualRent: any; }' and 'string'.ts(2367)

#code snippet for checking empty property

const hasEmptyRentSchedProperty = Object.values((this.proposedRentSchedule)).some((v => v === null || v === ""))

#object = this.proposedRentSchedule

[
    {
        "type": 0,
        "startDate": "2022-1-4",
        "endDate": "2022-1-19",
        "annualRent": "232"
    },
    {
        "type": 0,
        "startDate": "2022-1-20",
        "endDate": "2022-1-20",
        "annualRent": null
    }
]
javascriptangulartypescript

Answer №1

The reason for the error lies in your attempt to retrieve values from an array containing objects with multiple properties, rather than just strings. When comparing strings within this context, Typescript reveals the mismatch.

var data = [
  {
    "type": 0,
    "startDate": "2022-1-4",
    "endDate": "2022-1-19",
    "annualRent": "232"
  },
  {
    "type": 0,
    "startDate": "2022-1-20",
    "endDate": "2022-1-20",
    "annualRent": null
  }
]

console.log(data.some(element => Object.values(element).some(val => val === null || val === "")))

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