Vue:计算属性
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <div id="app"> <table border="1"> <thead> <th>学科</th> <th>分数</th> </thead> <tbody> <tr> <td>数学</td> <td><input type="text" v-model.number="math"></td> </tr> <tr> <td>语文</td> <td><input type="text" v-model.number="chinese"></td> </tr> <tr> <td>英语</td> <td><input type="text" v-model.number="english"></td> </tr> <tr> <td>总分</td> <td>{{sum}}</td> </tr> <tr> <td>平均分</td> <td>{{average}}</td> </tr> </tbody> </table> </div> <script src="https://cdn.bootcss.com/vue/2.4.2/vue.js"></script> <script> var app=new Vue({ el:"#app", data:{ math:80, chinese:80, english:100 }, computed:{ sum:function () { return this.math + this.chinese + this.english }, average:function () { return Math.round(this.sum / 3) } } }) </script> </body> </html>