Object.assign(this.$data, this.$options.data.apply(this)) code example

Example: re init data vue js

export default {
    data () {
        return {
            h2: 0,
            // other attributes...
        };
    },
    methods: {
        resetFields () {
            Object.assign(this.$data, this.$options.data.call(this));
        }
    }
}