<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>css样式控制</title>
    <style type="text/css">
        div>div{
            width: 60px;
            height: 60px;
            border: 2px solid #bbbbbb;
            text-align: center;
            line-height: 60px;
            font-size: 30px;
            margin: 10px;
            float: left;
        }
        .selected{
            border-color: #000000;
        }
        .active{
            background-color: #bbbbbb;
        }

    </style>
</head>
<body>
    <div id="app">
        <div>1</div>
        <div v-bind:style="[div2,divComputed3]">2</div>
        <div v-bind:style="[{borderColor:'#000'},divComputed3]">3</div>
        <div v-bind:style="divMethod4()">4</div>
    </div>

    <script src="../js/vue.js"></script>

    <script>
        let vm = new Vue({
            el:'#app',
            data:{
                div2:{
                    'border-color':'#000'
                },
                div3:{
                    'background':'#bbb'
                },
                div4:{
                    borderColor:'#000',
                    background: '#bbb'
                }
            },
            computed:{
                divComputed2:function () {
                    return this.div2;
                },
                divComputed3(){
                    return this.div3;
                }
            },
            methods:{
                divMethod4:function () {
                    return this.div4;
                }
            }
        });
    </script>
</body>
</html>