:src 三目运算

<img :src="index==0?'../img/xz_ok.png':'../img/xz_no.png'" />  绑定照片

<li v-for="(d,i) in datas.zong" :class="{'red':i+1==now}" @click="page(i+1)">{{i+1}}</li>      根据下标 绑定  class

三目运算 绑定 class
<style type="text/css">
		.red {
			color: red;
		}
		
		.yellow {
			color: yellow;
		}
		
		.blue {
			color: blue;
		}
		.green{color: green;}
	</style>



<h2 :class="[a? 'yellow':b? 'red':c? 'green':'yellow']">nihao </h2>

 绑定 style

<h1 :style="[a? {color:'red'}:b?{color:'blue'}:{color:'green'}]">h1</h1>





data: {							
		a:false,
		b:false,
		c:true,
			}