echart chart morisjs 图表重叠

var qname = [];
var qc = [];
var nums = [];
$.ajax({
    type: 'POST',
    url: ''',
	data:{"t0":start,"t1":end},
	success:function(ds){


if(ds.length==0 || ds[0].num==0 && ds[1].num==0 && ds[2].num==0){
	$('#infoThreeDisplay ').hide();  
	$('#noInfoThreeDisplay ').show();  
	$('#historyQualityBut ').attr('disabled ','disabled ');
	$('#historyQualityBut ').css({'background - color ':'gray '});
    }else{
 
      $('#noInfoThreeDisplay ').hide();  
	  $('#infoThreeDisplay ').show();  
	$('#historyQualityBut ').removeAttr("disabled");
  $('#historyQualityBut ').css({'background - color ':'#5bc0de '});
 
for(var i=0;i<ds.length;i++){
	qname[i]=ds[i].label;
	nums[i]=ds[i].num;
	qc=qc+' < tr > ' +' < td > <p > <i class = "fa fa-square '+color3[i]+'" > </i>'+ds[i].label+'</p > </td>'
               +'<td>'+ds[i].num+" 件"+'</td > '
               +' < /tr>'


}
$('#numOne3').empty().append(qc);
$('#canvas3').empty();
Morris.Donut({
                 element: 'canvas3',
                 data: ds,
                   colors: ["#26B99A", "#FFFF37","#E74C3C"],
                 formatter: function (y) {
                   return y + "%";
                 },
                 resize: true
               }); 
 
               }
        }
 });