Présentation des précautions pour le développement de canevas du mini-programme WeChat

wx.drawCanvas({
　　canvasId: 'target',
　　actions: context.getActions()
});

wx.drawCanvas({
  canvasId: 'target',
  actions: context.getActions(),
  reserve:true
});

<canvas disable-scroll="true" catchtouchmove="ccvsMove" bindtouchmove="cvsMove" canvas-id="target" id="target" style=&#39;width:{{width}}px;height:{{height}}px&#39;></canvas>

wx.drawCanvas({
  canvasId: 'target',
  actions: [],
  reserve:false
});

      wx.canvasToTempFilePath({
       canvasId: 'target',
       success: function success(res) {
        wx.saveFile({
         tempFilePath: res.tempFilePath,
         success: function success(res) {
          console.log('saved::' + res.savedFilePath);
         },
         complete: function fail(e) {
          console.log(e.errMsg);
         }
        });
       },
       complete: function complete(e) {
        console.log(e.errMsg);
       }
      });