<template>
    <div>
        <form @submit.prevent="onSubmit">
            <input type="text" v-model="fields.fname11" />
            <input type="text" v-model="fields.fname12" />
            <button type="submit">submit</button>
        </form>
    </div>
</template>

<script>
    let formfields = {
        fname11: '',
        fname12: ''
    };

    export default {
        data() {
            return {
                fields: formfields
            }
        },

        methods: {
            onSubmit() {
                // code responsible for reading, validating and sending data here
                // ...
                console.log(this.fields);
            }
        },
    }
</script>