JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.3.3/vue.js"></script>
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<div id="app">    
{{message}}
</div>
</body>

JavaScript

const app = new Vue({
    el: "#app",
    data: {
        message: [1,2,3,]
    },
    methods: {
        getList: function () {
            this.message = "what"      
        }
    },
    created:function () {
        this.getList();
    }
});