layui滑动条如何隐藏

$('img.echart-trand').click(function() {
 
  var host = $(this).data('host');
  var role = $(this).data('role');
 
  console.log('host',host);
  console.log(window.width);
 
  var labeltitle = host;
  if(role==4)labeltitle = $(this).data('title');
 
  var width = $(window).width() + "px";
  var height = $(window).height() + "px";
  layer.open({
    type: 2,
    title: labeltitle + ' - 投放关系图',
    shadeClose: true,
    move: false,
    scrollbar: false, // 父页面 滚动条 禁止
    // maxmin: true,
    area: [width, height],
    // content: ['/home/index/echartTest?role=2&wd='+host,'no'], //ifrma 滚动条 禁止显示 页面
    content: ['/home/index/echartTest?role='+role+'&wd=' + host],
  });
});