index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<link rel="stylesheet" href="app.css" />
</head>
<body>
<div id="app">
<p>{{ message }}</p>
<button @click="handleStart">start</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.0"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script type="text/javascript" src="app.js"></script>
</body>
</html>app.js
new Vue({
el: "#app",
data() {
return {
message: "Hello"
};
},
methods: {
handleStart() {
this.message = "handleStart"
}
},
mounted() {
console.log("Mounted.")
}
});