vue元件data必須是函式
阿新 • • 發佈：2021-07-05
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script> </head> <body> <div id="app"> <comp></comp> <comp></comp> </div> <template id="comp"> <div id=""> <p>{{message}}</p> <button @click="add">+</button> {{ count }} <button @click="sub">-</button> </div> </template> <script> const app = new Vue({ el: '#app', data: { }, components: { comp: { template: '#comp', data() { return { message: 'Hello Vue.js!', count: 1, } }, methods: { add() { this.count++; }, sub() { this.count--; } } }, } }) </script> </body> </html>