微信小程序自定义弹窗滚动与页面滚动冲突的解决方法

Page({
 /**
  * 页面的初始数据
  */
 data: {
  arrayData: null,
  dialogData: null,
  isDialogShow: false,
  isScroll: true
 },
 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
  //构建测试数据
  let data = new Array();
  let dialog = new Array();
  for (let i = 0; i < 25; i++) {
   data[i] = '我是测试-----------' + i;
   dialog[i] = {
    name: '我是弹窗-' + i,
    isSelected: false
   };
  }
  this.setData({
   arrayData: data,
   dialogData: dialog
  });
 },
 /**
  * 显示、关闭弹窗
  */
 showDialog: function (e) {
  var currentStatu = e.currentTarget.dataset.statu;
  console.log('currentStatu:', currentStatu);
  //关闭 
  if (currentStatu == "close") {
   this.setData({
    isDialogShow: false,
    isScroll: true
   });
  }
  // 显示 
  if (currentStatu == "open") {
   this.setData({
    isDialogShow: true,
    isScroll: false
   });
  }
 }
})

<button>做点什么</button>
<scroll-view scroll-y="{{isScroll}}"> 
 <view class="rootView">
  <view class="inTable">
   <view wx:for="{{arrayData}}" wx:key="" class="unitItemLeft" bindtap="showDialog" data-statu="open">
    <input class="baseItemWithBorder" value="{{item}}" disabled />
   </view>
  </view>
 </view>
</scroll-view>


<!--测试弹窗--> 
<view class="dialogMarsk" bindtap="showDialog" data-statu="close" wx:if="{{isDialogShow}}"></view> 
 <!--dialog-->
<view class="dialog" wx:if="{{isDialogShow}}">
 <view class="appreciationTitle">
  <text style="font-size:24px;">我是弹窗</text>
 </view>
 <view wx:for="{{dialogData}}" class="appreciationTable">
  <view class="unitItemLeft">
   <text class="baseItemWithBorder">{{item.name}}</text>
  </view>
 </view>
</view> 

Page {
 position: absolute;
 font-size: 36rpx;
 width: 100%;
 height: 100%;
 display: block;
 background: #FAFAFA;
 overflow-y: hidden;
}
 scroll-view {
 height: 100%;
} 
.rootView{
 /* width: 100%; */
 padding: 10rpx;
 display: flex;
 flex-direction: column;
}
.baseItemWithBorder{
 flex-grow: 1;
 height: 100%;
 padding-left: 20rpx;
 padding-right: 20rpx;
 border-bottom: solid 1rpx gainsboro;
}
.inTable{
 width: 100%;
 display: flex;
 box-shadow:5px 5px 10px gray;
 flex-direction: column;
 margin-top: 40rpx;
 background: white;
}
.inDetail{
 width: 100%;
 height: 80rpx;
 display: flex;
}
.unitLeft{
 justify-content: flex-start;
 padding-left: 20rpx;
}
.unitItemLeft{
 width: 100%;
 height: 80rpx;
 display: flex;
 flex-direction: row;
}
.dialogMarsk { 
 width: 100%; 
 height: 100%; 
 position: fixed; 
 top: 0; 
 left: 0; 
 z-index: 1000; 
 background: rgba(0, 0, 0, 0.6);
 overflow: hidden; 
}
.dialog {
 width: 80%;
 height: 50%; 
 position: fixed; 
 top: 10%;
 z-index: 1001; 
 background: #FAFAFA;
 border-radius: 3px;
 overflow-y: scroll;
}
.appreciationTable{
 width: 98%;
 display: flex;
 flex-direction: column;
 background: white;
 margin: 0 10rpx;
}
.appreciationTitle{
 width: 100%;
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: center;
 margin-top: 20rpx;
 margin-bottom: 20rpx;
}