vue动态改变样式

<i class="el-icon-arrow-left" :style="{\'color\': deadColorArr[index]}"  @click="reduceDeadDate(index)"></i>

<li class="box" v-for="(list,index) in dataList" :key="index" :class="{\'bor\':clicked==index}" @click="changeTab(index)">{{list}}</li>