JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/vue/dist/vue.js"></script>

<div id="app">
  <button v-on:click="clickedButton($event)">Click here!</button>
</div>

JavaScript

new Vue({
	el: '#app',
  methods: {
  	clickedButton: function(event) {
    	console.log(event);
    	alert("You clicked the button!");
    }
  }
});