code show as below:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<style>
div {
width: 100px;
height: 100px;
background: lightcoral;
}
.changeColor {
background: lightseagreen;
}
</style>
</head>
<body>
<section id="app">
<div :class="{changeColor}" @click="changeColor =! changeColor"></div>
</section>
<script>
new Vue({
el: '#app',
data: {
changeColor: false
}
})
</script>
</body>
</html>
To achieve the effect:
Reprinted in vue to achieve simple click to switch colors