Trigger a single occurrence of the function upon element creation and pass it to VueJS methods

Currently, I am working with BootstrapVue and would like to provide a brief overview of my code:

I have a v-for loop with inputs that can be dynamically created using a b-button named "addElement". Additionally, I have the option to select an item from a b-dropdown menu. For each selected item, its length is checked and the corresponding number of inputs equal to the arrayLength are generated.

For instance, if the selected array is ['1111', '2222', '3333'] with an arrayLength of 3, then there should be 3 inputs created.

My challenge lies in triggering a function automatically (denoted as ???) when I select an item from the dropdown list, whereby the function should be executed based on the arrayLength value by passing the correct id, indexParent, and indexChild parameters. How can I tackle this issue?

I require the above-mentioned parameters within my methods for implementation purposes.

Thank you in advance!

<div v-for="(id, indexChild) in inputs" :key="indexChild">
  
  <b-dropdown text="Select" right variant="success"gt;
    <b-dropdown-item v-for="(item, indexDropdown) in json" :key="indexDropdown" @click="trySomething(item.Number)">{{item.Name}}</b-dropdown-item>
  </b-dropdown>

  <b-button v-b-toggle="'newElement'+indexParent+indexChild">Element {{indexChild + 1}}></b-button>
  
  <b-collapse :id="'newElement'+indexParent+indexChild"
    <div ???="getValues(id, indexParent, indexChild)"> <!-- how can I fire this when created? -->
      <!-- Do some more code -->  
    </div>
  </b-collapse>
</div>


<!-- create new "item"-elements -->
<div>
  <b-button @click="addElement()">Add element</b-button>
</div>
methods: {
  addProduct() {
    this.inputs.push({})
  },

  trySomething(itemValue) {

    var array = [];
    const products = this.otherJSON.find((i) => i.Number === itemValue);
    for (let key in products.ID) {
      array.push(products.ID[key]);
    }
      
    this.getLengthArray = array.length;

    this.inputs.splice(0); // Initial deletion before pushing exact inputs based on arrayLength

    for (let i = 0; i < this.getLengthArray; i++) {
      this.inputs.push({});
    }
  },

  getValues(id, indexParent, indexChild) { // Requires the parameters id, indexParent, indexChild
  }
},

data() {
  return {
    inputs: [{}],
  }
},

props: ["indexParent"]

Answer №1

Just implemented this:

<div v-if="checkData(id, parentIndex, childIndex)" v-once></div>

and it did the trick!

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