v-else-if 和 v-else 要紧跟在 v-if 或 v-else-if 之后
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<span v-if="score >= 85">优秀</span>
<span v-else-if="score >= 75">良好</span>
<span v-else-if="score >= 60">及格</span>
<span v-else>不及格</span>
</div>
<script src="https://unpkg.com/vue@next"></script>
<script>
const vm = Vue.createApp({
data(){
return {
score:90
}
}
}).mount("#app");
</script>
</body>
</html>