<!-- 弹出框 -->
<view class="popCss" :style="{'top':curTop+'px'}" @touchmove.stop.prevent="" v-if="isPop" @tap="curTab = null">
    <!-- 全部分类 -->
    <view class="typeOne typeOneText" v-if="curTab==0" @tap.stop="">
        <!-- 左侧大分类 -->
        <view class="oneLeft">
            <scroll-view class="scroll-view" scroll-y>
            <view class="itemLeft" v-for="(item,index) in typeOne" :key="index" :class="index==oneIndex?'hover':''" @tap="changeOne(index)">{{item.name}}</view>
            </scroll-view>
        </view>
        <!-- 右侧子分类 -->
        <view class="oneRight">
            <scroll-view class="scroll-view" scroll-y>
                <view class="itemRight" v-for="(itemC,indexC) in typeOne[oneIndex].children" :key="indexC"  :class="oneIdC==itemC.id?'hover':''" @tap="chengeOneC(itemC,typeOne[oneIndex])">{{itemC.name}}</view>
            </scroll-view>
        </view>
    </view>
</view>

之前加 scroll-view 也不好使 向上滑动也不动 后来加了css 

.scroll-view{max-height: 608rpx; overflow-y: scroll;} ******必加******

	.popCss{
		position: fixed;
		right: 0;
		left:0;
		width: 100%;
		height: 100vh;
		background: rgba(0, 0, 0, 0.4);
		bottom: var(--window-bottom);
		z-index: 111;
		// 全部分类		
		.typeOne{
			max-height: 608rpx;
			background: $whiteColor;
			overflow: hidden;
			.scroll-view{
				max-height: 608rpx; 
				overflow-y: scroll;
			}
			.oneLeft{
				width: 300rpx;
				// max-height: 608rpx;
				background: #F7F7F7;
				// overflow-y: scroll;
				float: left;
				display: block;
				.itemLeft{
					padding: 0 60rpx;
					@extend .oneHidden;
					height: 76rpx;
					line-height: 76rpx;
					@include defaultFont(26rpx,normal,#2E2E2E);
				}
				.hover{
					background: $whiteColor;
					color: #E9513D;
				}
			}
			.oneRight{
				float: right;
				display: block;
				width: 410rpx;
				.itemRight{
					padding: 0 60rpx 0 0;
					@extend .oneHidden;
					height: 76rpx;
					line-height: 76rpx;
					@include defaultFont(26rpx,normal,#2E2E2E);
				}
				.hover{
					color:#E9513D;
				}
			}
		}
}