一个页面中使用多个ucharts，放在两排，不是同时加载出来，而是一排一排加载出来的

            <view class="chart1">  
               <qiun-data-charts   
                  type="line"  
                  :opts="opts"  
                  :chartData="chartData1"  
                />  
            </view>  
            <view class="chart2">  
               <qiun-data-charts   
                  type="line"  
                  :opts="opts"  
                  :chartData="chartData2"  
                />  
            </view>  
            <view class="chart3">  
               <qiun-data-charts   
                  type="line"  
                  :opts="opts"  
                  :chartData="chartData3"  
                />  
            </view>  
            <view class="chart4">  
               <qiun-data-charts   
                  type="line"  
                  :opts="opts"  
                  :chartData="chartData4"  
                />  
            </view>