基於JavaScript實現簡易計算器
阿新 • • 發佈：2021-06-23
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="https://unpkg.com/vue/dist/vue.js"></script> </head> <body> <div id="app"> <p>{{ message }}</p> <p>{{ totalPrice }}</p> </div> <script> new Vue({ el: '#app', data: { message: 'Hello Vue.js!', books: [{ id: 1, name: 'HTML/HTML5基礎', price: 58 }, { id: 2, name: '高健壯性CSS', price: 68 }, { id: 3, name: '深入學習JS', price: 78 } ] }, computed: { totalPrice: function() { let result = 0; for (let i = 0; i < this.books.length; i++) { result += this.books[i].price; } return result; }, totalPrice: function() { let result = 0; for (let i in this.books) { result += this.books[i].price; } return result; }, } }) </script> </body> </html>