演示效果
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app" class="demo">
<input type="text" v-model="message">
<p>首字母大写: {{ message | capitalize }}</p>
</div>
<script>
new Vue({
el: '#app',
data: function () {
return {
message: 'loen'
}
},
filters: {
capitalize: function (value) {
if (!value) return ''
value = value.toString()
return value.charAt(0).toUpperCase() + value.slice(1)
}
}
})
</script>
</body>
</html>
