The ".splice()" method continuously removes the final element from an array

Question

The ".splice()" method continuously removes the final element from an array

I have implemented a function on my form that allows me to add multiple file inputs for various images by clicking a button. Although this functionality is working correctly, I am facing an issue while trying to delete an input field using .splice. Instead of deleting the input field with the matching index, it keeps removing the last item in the array where my input fields are stored. Despite spending hours attempting to resolve this problem, I am unable to find a solution. I would greatly appreciate any help or advice on what might be causing this error.

Here is the method used to add a new input field:

addInputField() {

    i++

    this.values.links.push({
      id: i,
      url: ''
    });
  }

This is the code snippet responsible for deleting an input field:

deleteInputField(index) {

    this.values.links.splice(index, 1);

    const items = this.values.links.filter(item => {

      return item.id > index
    });

    items.forEach(function (item) {
      item.id = item.id -1;
    });
  }

Below is the button used to delete the input field:

<v-icon
  medium
  v-if="link.id > 0"
  color="#FF0000"
  class="ma-4"
  @click="deleteInputField(link.id)"
>

javascript vue.js nuxt.js

Answer 1

Answer №1

To easily remove the id (link.id), you can utilize this convenient function.

function eliminateLinkEntry(linkId){
    this.data.links = this.data.links.filter(entry => {
        return entry.id !== linkId;
    });
}

By using this code, it will iterate through the array and exclude the one with the same id as the specified linkId.

Alternatively, you can directly pass the index from the v-for loop to the @click event handler.

eliminateLinkEntry(index) {
    this.data.links.splice(index, 1);
}

Answer 2

To easily remove the id (link.id), you can utilize this convenient function.

function eliminateLinkEntry(linkId){
    this.data.links = this.data.links.filter(entry => {
        return entry.id !== linkId;
    });
}

By using this code, it will iterate through the array and exclude the one with the same id as the specified linkId.

Alternatively, you can directly pass the index from the v-for loop to the @click event handler.

eliminateLinkEntry(index) {
    this.data.links.splice(index, 1);
}

Answer 3

Answer №2

hyperlinks represents a collection of objects. The parameter passed is not an index within the array, but rather an identifier found inside the nested object.

<v-icon
  medium
  v-if="link.id > 0"
  color="#FF0000"
  class="ma-4"
  @click="deleteInputField(link.id)" // Modify to use index (mostly obtained from v-for loop)
>

Answer 4

hyperlinks represents a collection of objects. The parameter passed is not an index within the array, but rather an identifier found inside the nested object.

<v-icon
  medium
  v-if="link.id > 0"
  color="#FF0000"
  class="ma-4"
  @click="deleteInputField(link.id)" // Modify to use index (mostly obtained from v-for loop)
>

Answer 5

Answer №3

When using the splice method, it's important to understand that the first parameter is known as start:

This refers to the index at which the changes to the array should begin. If this index is larger than the length of the array, the starting point will default to the end of the array. In cases where the index is negative, the starting point will be relative to the end of the array (using -1 as the origin point). For example, a value of -n indicates the nth last element from the end, equivalent to array.length - n. If the sum of array.length and the start value is less than 0, the starting point will be set at index 0.

Upon closer inspection of the code, you'll notice that the id being passed is not an actual index in the links array. Instead, it corresponds to an id greater than the array's length.

Answer 6

When using the splice method, it's important to understand that the first parameter is known as start:

This refers to the index at which the changes to the array should begin. If this index is larger than the length of the array, the starting point will default to the end of the array. In cases where the index is negative, the starting point will be relative to the end of the array (using -1 as the origin point). For example, a value of -n indicates the nth last element from the end, equivalent to array.length - n. If the sum of array.length and the start value is less than 0, the starting point will be set at index 0.

Upon closer inspection of the code, you'll notice that the id being passed is not an actual index in the links array. Instead, it corresponds to an id greater than the array's length.

Answer 7

Answer №4

If you want to delete a specific input field, remember that the ID is not the same as the index. You can remove the desired input field by using the following code:

this.values.links.splice(index, 1);

Answer 8

If you want to delete a specific input field, remember that the ID is not the same as the index. You can remove the desired input field by using the following code:

this.values.links.splice(index, 1);

The ".splice()" method continuously removes the final element from an array

Answer №1

Answer №2

Answer №3

Answer №4

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