Changes

frontend/counter.js

@@ -0,0 +1,9 @@
+export function setupCounter(element) {
+  let counter = 0
+  const setCounter = (count) => {
+    counter = count
+    element.innerHTML = `count is ${counter}`
+  }
+  element.addEventListener('click', () => setCounter(counter + 1))
+  setCounter(0)
+}

frontend/main.js

@@ -0,0 +1,24 @@
+import './style.css'
+import javascriptLogo from './javascript.svg'
+import viteLogo from '/vite.svg'
+import { setupCounter } from './counter.js'
+
+document.querySelector('#app').innerHTML = `
+  <div>
+    <a href="https://vitejs.dev" target="_blank">
+      <img src="${viteLogo}" class="logo" alt="Vite logo" />
+    </a>
+    <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript" target="_blank">
+      <img src="${javascriptLogo}" class="logo vanilla" alt="JavaScript logo" />
+    </a>
+    <h1>Hello Vite!</h1>
+    <div class="card">
+      <button id="counter" type="button"></button>
+    </div>
+    <p class="read-the-docs">
+      Click on the Vite logo to learn more
+    </p>
+  </div>
+`
+
+setupCounter(document.querySelector('#counter'))