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Javascript – How to filter an array of objects by key

There are similar questions to this but I cannot find something to tackle this one exactly.

I have an Array that is shaped like this:

AllReviews: [

{"0001": [
         {"Review": "In a Pickle", "Notes": "Approved"},
         {"Review": "A Cat Nap", "Notes": "Approved"},
         {"Review": "Flea market", "Notes": "Approved"}
       ]
},
{"0002": [
         {"Review": "Mouth-watering", "Notes": "Approved"},
         {"Review": "Easy As Pie", "Notes": "Approved"},
       ]
},
{"0003": [
         {"Review": "Loved it", "Notes": "Approved"},
         {"Review": "To sweet", "Notes": "Rejected"}
       ]
}

]

I want to filter this Array so that it only returns the review for 002. I cannot figure out how to do it. My attempt was feeble:

AllReviews.value.filter((Review) => {
   for (const [Key, Value] of Object.entries(Review)) {
    return Review[Key] === 0002 // Trying to say return the value (the array with reviews and notes) where the Key of the object matches what I want e.g. 0002
 }
})

My code is a nonsense of course and will not work.

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    Well for all the downvotes and close requests, I figured it out myself:

    let AllReviews = [
{"0001": [
         {"Review": "In a Pickle", "Notes": "Approved"},
         {"Review": "A Cat Nap", "Notes": "Approved"},
         {"Review": "Flea market", "Notes": "Approved"}
       ]
},
{"0002": [
         {"Review": "Mouth-watering", "Notes": "Approved"},
         {"Review": "Easy As Pie", "Notes": "Approved"},
       ]
},
{"0003": [
         {"Review": "Loved it", "Notes": "Approved"},
         {"Review": "To sweet", "Notes": "Rejected"}
       ]
}
];

let result = AllReviews.forEach((Review) => {
  for (const [Key, Value] of Object.entries(Review)) {
    if (Number(Key) === 0002 && Value != null && Value.length) {
      return [{
        [Key]: Review[Key]
      }]
    }
  }
})

console.log(result);

    Obviously 0002 will not be hardcoded in production and is a variable.


  2. 0

    Simply:

    const AllReviews =
    [ { '0001': 
        [ { Review: 'In a Pickle', Notes: 'Approved'} 
        , { Review: 'A Cat Nap',   Notes: 'Approved'} 
        , { Review: 'Flea market', Notes: 'Approved'} 
      ] } 
    , { '0002': 
        [ { Review: 'Mouth-watering', Notes: 'Approved'} 
        , { Review: 'Easy As Pie',   Notes: 'Approved'} 
      ] } 
    , { '0003': 
        [ { Review: 'Loved it', Notes: 'Approved'} 
        , { Review: 'To sweet', Notes: 'Rejected'} 
    ] } ];
    
const Result = AllReviews.filter( row => row.hasOwnProperty('0002') );

console.log( Result );
    .as-console-wrapper{max-height:100% !important;top:0}
.as-console-row::after{display:none !important;}
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