vue中样式的典型操作(:class,:style)

 1 <template>
 2     <div class="home-wrapper">
 3       <div class="home-top">this is from Home.vue</div>
 4       <!--num>10,背景颜色红色，否则橙色-->
 5       <div class="test" :class="num>10? bgColor1: bgColor2">this is a test,num is : {{num}}</div>
 6       <button @click="changeNum">click to change num</button>
 7       <div class="test2" :style="{fontSize: fontSize+ 'px'}">this is test2</div>
 8       <button @click="changeTest2FontSize">click to change fontSize</button>
 9     </div>
10 </template>
11 
12 <script>
13 export default {
14   name: 'Home',
15   data () {
16     return {
17       num: '',
18       bgColor1: 'bgColor1',
19       bgColor2: 'bgColor2',
20       fontSize: 10
21     }
22   },
23   methods: {
24     changeNum () {
25       this.num = Math.floor(Math.random() * 20)
26       console.log(this.num)
27     },
28     changeTest2FontSize () {
29       if (this.fontSize < 30) {
30         this.fontSize = 30
31       } else {
32         this.fontSize = 15
33       }
34     }
35   }
36 }
37 </script>
38 
39 <style lang="scss" scoped>
40 .home-wrapper{
41   width: 80%;
42   display: flex;
43   align-items: center;
44   flex-direction: column;
45   .home-top{
46     width: 300px;
47     height: 100px;
48   }
49   .bgColor1{
50     background-color: red;
51   }
52   .bgColor2{
53     background-color: orange;
54   }
55   .test{
56     width: 300px;
57     height: 200px;
58   }
59 }
60 
61 </style>