1. In the dataToSend object
2. I want to access CreateValues and filter(startsWith('FLD_STR_') && typeof el.value === 'object')
3. Once I retrieve the field, I remove the array newly created and I push the data to a new object createFileValues.
4. I then want to add createFileValue to the dataToSend Object
5. And I delete the element filtered from the initial createValues array

//original object
const dataToSend = {
  ID: 748817,
  createValues: [{
      field: "FLD_STR_101",
      value: 'hello',
    },
    {
      field: "FLD_STR_102",
      fileName: "doc.pdf",
      value: {
        field: 'FLD_STR_102',
        fileName: 'bulletin_paie_avril.pdf',
        value: 'jkhkjhkhkjh'
      }
    }
  ]
}

// code in progress

const test = dataToSend.createValues.filter(
        (el) => el.field.startsWith('FLD_STR_') && typeof el.value === 'object'
    );
    dataToSend.createFileValues = test;



//output desired

const dataToSend = {
  createValues: [{
      field: "FLD_STR_101",
      value: 'hello',
    }],
createValues: [{
      field: "FLD_STR_101",
      value: 'hello',
    }
  ],
  createFileValues:{
    field: 'FLD_STR_102',
    fileName: 'bulletin_paie_avril.pdf',
    value: 'jkhkjhkhkjh'
  }
}
    

CodePudding user response：

You should use splice using index of the element you want.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice

You will need to use a loop;

const test = dataToSend.createValues.filter(
        (el) => el.field.startsWith('FLD_STR_') && typeof el.value === 'object'
    );
dataToSend.createFileValues = test;

test.foreach( ( obj ) => {
   dataToSend.createValues.splice( 0, 1, obj );
}

If you really for some reason don't want to use a loop and you know you will ever only want 1 item then you could do

const test = dataToSend.createValues.filter(
        (el) => el.field.startsWith('FLD_STR_') && typeof el.value === 'object'
    );
dataToSend.createFileValues = test;
dataToSend.createValues.splice( 0, 1, test[0] );