js和leaflet一起保存并下载当前页面的截图，在线会显示图片中的线条会有偏移问题解决

    <div id="map" class="map"></div>
    
    

  var mapid = document.querySelector('#map');

    
     const scale = window.devicePixelRatio;
    
     // // 传入节点原始宽高
    
     const _width = mapid["offsetWidth"];
    
     const _height = mapid["offsetHeight"];
    
     var options = { width: _width, height: _height };
    
  
    
     // html2canvas配置项
    
     const ops = {
    
       scale: 1,
    
       width: _width,
    
       height: _height,