jzmall_wx/pages/ucenter/parter/sign/index.wxml

 
  <!-- 签名画布 -->
  <canvas class="canvas" id="canvas" canvas-id="canvas" disable-scroll="true" 
  bindtouchstart="canvasStart" bindtouchmove="canvasMove" bindtouchend="canvasEnd" 
  touchcancel="canvasEnd" binderror="canvasIdErrorCallback">
 
  </canvas>
 
  <view class='buttonBox'>
    <button bindtap='clickMe' class='addbutton' bindtap="getimg">确定</button>
    <button type="default" class='delbutton' bindtap="cleardraw">重签</button>
 
  </view>