JavaScript - "Filter" through an object - best practise?

user_3180997 0
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What is the best way to "filter" through an object? I have an example object that looks like:

const response = {
       "example-feed": [
          {
             "money": {
                "amount": 2588
             },
             "sourcemoney": {
                "amount": 2588
             },
             "direction": "OUT"

          },
          {
             "money": {
                "amount": 2925
             },
             "sourcemoney": {
                "amount": 2925
             },
             "direction": "IN"

          },
          {
             "money": {
                "amount": 1921
             },
             "sourcemoney": {
                "amount": 1921
             },
             "direction": "OUT"
          },
          {
             "money": {
                "amount": 1467
             },
             "sourcemoney": {
                "amount": 1467
             },
             "direction": "IN"
          },
       ]
    }

What is the best way to "filter" through it to remove any objects that have the key-value pairing of "direction": "IN"?

For example, I would like to remove the two objects that have a direction set to IN, so the new object becomes:

const response = {
   "example-feed": [
      {
         "money": {
            "amount": 2588
         },
         "sourcemoney": {
            "amount": 2588
         },
         "direction": "OUT"

      },
      {
         "money": {
            "amount": 1921
         },
         "sourcemoney": {
            "amount": 1921
         },
         "direction": "OUT"
      },
   ]
}

Within an array, I know you can use the filter functionality? Curious to understand what the best practise is here to try and achieve the above?

arrays json javascript
2 Answers

The best practice is to use methods which are designed to make filtering:

response['example-feed'] = response['example-feed'].filter(f => f.direction != 'IN');

filter method works with arrays, so you need to filter array, not an object.

An example:

const response = {
    "example-feed": [
       {
          "money": {
             "amount": 2588
          },
          "sourcemoney": {
             "amount": 2588
          },
          "direction": "OUT"

       },
       {
          "money": {
             "amount": 2925
          },
          "sourcemoney": {
             "amount": 2925
          },
          "direction": "IN"

       },
       {
          "money": {
             "amount": 1921
          },
          "sourcemoney": {
             "amount": 1921
          },
          "direction": "OUT"
       },
       {
          "money": {
             "amount": 1467
          },
          "sourcemoney": {
             "amount": 1467
          },
          "direction": "IN"
       },
    ]
 };

 response['example-feed'] = response['example-feed'].filter(f => f.direction != 
 'IN');
 console.log(response)

user_16462400 

const response={
   "example-feed": [
      {
         "money": {
            "amount": 2588
         },
         "sourcemoney": {
            "amount": 2588
         },
         "direction": "OUT"

      },
      {
         "money": {
            "amount": 2925
         },
         "sourcemoney": {
            "amount": 2925
         },
         "direction": "IN"

      },
      {
         "money": {
            "amount": 1921
         },
         "sourcemoney": {
            "amount": 1921
         },
         "direction": "OUT"
      },
      {
         "money": {
            "amount": 1467
         },
         "sourcemoney": {
            "amount": 1467
         },
         "direction": "IN"
      },
   ]
}

const filteredres=response['example-feed'].filter(obj=>
               obj.direction!=='IN'
)
console.log(filteredres)

user_94325180
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