How to check custom key is present in array of object

Question

I have an array of object with this structure

[
  {
    "Apple": "fruit"
  },
  {
    "Orange": "fruit"
  },
  {
    "Cake": "sweet"
  }
]

How i can check Apple is present in this array of object using javascript

Does this answer your question? How to determine whether an object has a given property in JavaScript — Tân
– Tân, Commented Jan 16, 2020 at 5:31

Mark · Accepted Answer · 2020-01-16 05:38:24Z

1

You can use some() and test with in or Object.hasOwnProperty:

let arr = [ { "Apple": "fruit" }, { "Orange": "fruit" }, { "Cake": "sweet" } ] 

console.log(arr.some(obj => obj.hasOwnProperty('Apple')))
console.log(arr.some(obj => obj.hasOwnProperty('Bannana')))

This will return true for the first condition that matches and false if none match.

edited Jan 16, 2020 at 5:38

answered Jan 16, 2020 at 5:30

Mark

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