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<!DOCTYPE html> <html> <head> <title>Moose count</title> <style> #app { border: dashed black 1px; width: 250px; padding: 10px; } img { width: 100%; } button { margin: 10px; padding: 5px 10px; } </style> </head> <body> <h1>Example: Passing Arguments with Methods</h1> <div id="app"> <img src="img_moose.jpg" width="770" height="549"> <p>{{ "Moose count: " + count }}</p> <button v-on:click="addMoose(1)">+1</button> <button v-on:click="addMoose(5)">+5</button> <button v-on:click="addMoose(-1)">-1</button> </div> <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script> <script> const app = Vue.createApp({ data() { return { count: 0 } }, methods: { addMoose(number) { this.count+=number /* the same as this.count=this.count+number */ } } }) app.mount('#app') </script> </body> </html>