Update the JSON data following deletion

Question

Update the JSON data following deletion

I have received the following JSON data:

 "memberValidations":
       [
           {
               "field": "PRIMARY_EMAIL",
               "errorCode": "com.endeavour.data.validation.PRIMARY_EMAIL",
               "createdDateTime": null
            },
            {
               "field": "lastName",
               "errorCode": "com.endeavour.data.validation.lastName",
               "createdDateTime": null
             },
       ]

After removing an object using delete memberValidations[0];

I expected to retrieve lastname from memberValidations[0];, but instead I'm getting undefined. Any suggestions on how to correct this?

javascript json

Answer 1

Answer №1

By using the `delete` method, you can effectively remove an item from an array. However, the array will not be resized, so the deleted item will still exist at index `0`, although it will be set to `undefined`. This information can be found in the documentation.

Keep in mind that when you delete an element from an array, the length of the array remains unchanged. This applies even if the last element is deleted.

If you wish to completely remove an item from the array, you should also resize the array by using the following code:

memberValidations.splice(0, 1)

Answer 2

By using the `delete` method, you can effectively remove an item from an array. However, the array will not be resized, so the deleted item will still exist at index `0`, although it will be set to `undefined`. This information can be found in the documentation.

Keep in mind that when you delete an element from an array, the length of the array remains unchanged. This applies even if the last element is deleted.

If you wish to completely remove an item from the array, you should also resize the array by using the following code:

memberValidations.splice(0, 1)

Update the JSON data following deletion

Answer №1

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