JavaScript How to filter array of objects by dynamic key?

javascript

I have an array which contains objects with dynamic keys, my aim is to find if this array contains or not specific key, How can this be achieved?

let arr = [
  {item1: { key: 'sdfd', value:'sdfd' }},
  {item2: { key: 'sdfd', value:'sdfd' }},
  {item3: { key: 'sdfd', value:'sdfd' }}
]

let target = 'item1'

//result array
 let arr = [
  {item1: { key: 'sdfd', value:'sdfd' }},
]

Use Array#filter() and the in operator

let arr = [
  {item1: { key: 'sdfd', value:'sdfd' }},
  {item2: { key: 'sdfd', value:'sdfd' }},
  {item3: { key: 'sdfd', value:'sdfd' }}
]

let target = 'item1'

console.log(
  arr.filter(i => target in i)
)

Based on your title, I assume you want to try using array.filter , so follow up your attempt of using array.filter, this is an opion:

let arr = [
  {item1: { key: 'sdfd', value:'sdfd' }},
  {item2: { key: 'sdfd', value:'sdfd' }},
  {item3: { key: 'sdfd', value:'sdfd' }}
]

let target = 'item1'

let newarr= arr.filter(each=>Object.keys(each).toString() ==target)
console.log(newarr)

JavaScript How to filter array of objects by dynamic key?

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