v-model= selected events
<select name="LeaveType" @change="onChange($event)" class="form-control" v-model="key"> <option value="1">Annual Leave/ Off-Day</option> <option value="2">On Demand Leave</option> </select> <script> var vm = new Vue({ data: { key: "" }, methods: { onChange(event) { console.log(event.target.value) } } } </script>