alter array of object value base on dynamic property

user_13043477 0
Viewed 44

I have array of object like this

let arr = [
  {
    "james-0": {
      "value": "",
      "error": false
    },
    "john-0": {
      "value": "",
      "error": false
    },
    "jordan-0": {
      "value": "",
      "error": false
    }
  }
]

I want to alter error to true if the value is not false / empty string.

I tried this but it deosn't seem to work, I can't hardcode james-${i}

arr = arr.map((o,i) => {

  let prop = o[`james-${i}`]
  if(!prop.value) prop.error = true

  console.log(prop)

  return {
    ...o,
    [`james-${i}`]: prop
  }
})
ecmascript-6 javascript
2 Answers

You can try this approach

let arr = [
  {
    "james-0": {
      "value": "",
      "error": false
    },
    "john-1": {
      "value": "",
      "error": false
    },
    "jordan-2": {
      "value": "val",
      "error": false
    }
  }
];

arr = arr.map(value => {
    Object.keys(value).forEach(key => {
     if (!value[key].value) {
           value[key].error = true;
        }
    })
    return value;
})

console.log(arr);

.

user_46107400

simply that ?

let arr = 
    [ { "james-0":  { "value": "",    "error": false } 
      , "john-0":   { "value": "abc", "error": false } 
      , "jordan-0": { "value": "",    "error": false } 
      } 
    ] 

Object.keys(arr[0]).forEach( e=> arr[0][e].error = ( arr[0][e].value == ''))

console.log( arr )

user_106690100
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