//wxml
<view class="box">
    <map class="mapv" longitude="{{longitude}}" latitude="{{latitude}}" scale="{{scale}}"></map>
</view>

//wxss
.box {
    width: 100%;
    height: 400rpx;
    background: pink;
}
.mapv{
    width: 100%;
    height: 300rpx;
}

//js
 data: {
    latitude: 39.948353,
    longitude:116.390471,
    scale: 16,


  },