HTML
CSS
JavaScript
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>第一个字母转为大写 - IT书包(www.itshubao.com)</title>
<script src="https://cdn.bootcss.com/vue/2.2.2/vue.min.js"></script>
</head>

<body>
<div id="app">
  {{ message | capitalize }}
</div>
</body>
</html>
CSS

  
JavaScript
new Vue({
  el: '#app',
  data: {
	message: 'itshubao'
  },
  filters: {
    capitalize: function (value) {
      if (!value) return ''
      value = value.toString()
      return value.charAt(0).toUpperCase() + value.slice(1)
    }
  }
})