<!DOCTYPE html> <html lang="zh"> <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"> <script type="text/javascript" src='vue.min.js'></script> <title></title> <style type="text/css"> body{ background-color: #ccc; } </style> </head> <body> <input type="button" name="" id="" value="changed" @click="set"/> <div :style="myDiv"> </div> <script type="text/javascript"> new Vue({ el:'body', data:{ myDiv:{ 'width':'200px', 'height':'200px', 'background':'red', 'transition':'.5s' } }, methods:{ set:function() { this.myDiv.width='400px'; this.myDiv.height='400px'; this.myDiv.background='green'; } } }); </script> </body> </html>
解释：
:style和:class差不多，但是只持json 数组 字符串
