fix:题库indedx

pages/index/index.vue

@@ -108,7 +108,7 @@
 					</template>
 					<template v-if="tabNum == 1 && bankName.length > 1">
 						<view v-for="(item, index) in bankName" :key="index" class="filter_item" @click="changebank(item.recommendId, index)">
-							<view class="name" :class="{nactive: couIndex == index}">{{ item.name }}</view>
+							<view class="name" :class="{nactive: bankIndex == index}">{{ item.name }}</view>
 						</view>
 					</template>
 				</scroll-view>