Vue Js Select Multiple Chips

<h3>Vue Js Multiple Select Chips</h3>
        <div class="chips">
            <span v-for="(chip, index) in chips" :key="index" class="chip">
                {{ chip }}
                <i class="material-icons" @click="removeChip(index)">close</i>
            </span>
        </div>
        <select v-model="newChip" @change="addChip">
            <option disabled value="">Please select one</option>
            <option v-for="option in options" :value="option.language">
                {{option.language}}</option>
        </select>
  </div>
    <script type="module">
        const app = new Vue({
            el: "#app",
            data() {
                return {
                    chips: [],
                    newChip: "",
                    options: [
                        { id: 1, language: 'React', },
                        { id: 2, language: 'Vue', },
                        { id: 3, language: 'Angular' },
                        { id: 4, language: 'Node' },
                        { id: 5, language: 'Express' },
                        { id: 6, language: 'Bootstrap' },
                        { id: 7, language: 'MongoDb' },
                    ]

}
            },
            methods: {
                addChip() {
                    if (this.newChip !== "" & this.chips.indexOf(this.newChip) == -1) {
                        this.chips.push(this.newChip);
                        this.newChip = "";
                    }
                },
                removeChip(index) {
                    this.chips.splice(index, 1);
                }
            }
        });
    </script>
    <style scoped>
        .chips {
            display: flex;
            flex-wrap: wrap;
        }

.chip {
            display: flex;
            align-items: center;
            background-color: #e0e0e0;
            padding: 0.4rem;
            border-radius: 16px;
            margin: 0.5rem;
            font-size: 1rem;
            font-weight: bold;
        }

.chip i {
            margin-left: 0.5rem;
            cursor: pointer;
            font-size: 1rem;
            background-color: black;
            color: #fff;
            border-radius: 50%;
        }
    </style>
</body>
</html>