anchor.diff:                              type: 'datetime',
                               gridLineWidth: 1,
                               labels: {
  -                                step:6
  +                                step:36
                               }, 
                               categories: sendObj["timeStamp"]
                           },
  
positive.code:                         },
                          //配置副标题
                          subtitle: {
                              text: '',
                              y:30
                          },
                          //配置x轴
  
negative.code:     </div>
  </body>
  
  </html>
  