uni-app的三元表达式

<swiper class="swiper_background" :indicator-dots="indicatorDotss" :autoplay="autoplays" :circular="circular"
				 :vertical="vertical" :interval="interval" :duration="duration" previous-margin="20rpx" next-margin="40rpx">
					
						<swiper-item class="swiper-item_background" v-for="(item,index) in dzjyList" :key="index">
							<navigator class="swiper-item_background_out" url="../project/dz_detail?id=1">
								<view class="swiper-item_background_in" :class="index%2 == 0?'demo-text-1':'demo-text-2'">
									<view class="swiper-item_background_in_view">
										<view class="item_code">002277</view>
										<view class="item_num">500万股</view>
									</view>
								</view>
							</navigator>
						</swiper-item>
					
				</swiper>