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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> <div id="app"> <div> <label>英文名:</label> <input type="text" v-model="name"/> </div> <div>{{ name | capitalize}}</div> </div> </body> <script src="https://unpkg.com/vue/dist/vue.js"></script> <script type="text/javascript"> var vm = new Vue({ el: '#app', data() { return { name: '' } }, filters: { capitalize: function(value) { if (!value) return '' value = value.toString() return value.charAt(0).toUpperCase() + value.slice(1) } } }) </script> </html>
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