Vue Js Remove Duplicate Object from Array:To remove duplicate objects from an array in Vue.js, you can use a combination of JavaScript’s filter method and the Set data structure. First, create a new set by passing the array to the Set constructor. This will automatically remove duplicates. Then, convert the set back to an array using the spread operator ... and the filter method to remove any empty slots. Finally, assign the filtered array back to the original array variable. This process can be summarized in approximately 100 words: “To remove duplicate objects from an array in Vue.js, create a set from the array to eliminate duplicates, convert the set back to an array while filtering out empty slots, and assign the filtered array to the original variable

How can I remove duplicate objects from an array in Vue js?

The removeDuplicates() function in Vue.js removes duplicate objects from an array. It achieves this by performing the following steps:

1. It uses the map() method to extract all the unique id values from the items array.
2. The new Set() constructor is used to create a Set, which automatically eliminates duplicate values.
3. The Array.from() method converts the Set back into an array.
4. The map() method is then used again to retrieve the objects from the items array that have the unique id values.
5. Finally, the items array is updated with the uniqueItems array, effectively removing any duplicate objects

Vue Js Remove Duplicate Object from Array Example

  <div id="app">
    <ul>
      <li v-for="item in items" :key="item.id">{{item.id}} {{ item.name }} {{item.role}}</li>
    </ul>
    <button @click="removeDuplicates">Remove Duplicates</button>

  </div>
  <script type="module">
    const app = new Vue({
      el: "#app",
      data() {
        return {
          items: [
            { id: 1, name: 'John', role: 'Developer' },
            { id: 2, name: 'Jane', role: 'Marketing' },
            { id: 1, name: 'John', role: 'Developer' }, // Duplicate
            { id: 3, name: 'Bob', role: 'SEO' },
          ],
        };
      },
      methods: {
        removeDuplicates() {
          const uniqueItems = Array.from(new Set(this.items.map(item => item.id)))
            .map(id => this.items.find(item => item.id === id));
          this.items = uniqueItems;
        },
      },

    });
  </script>

Output of Vue Js Remove Duplicate Object from Array