版本以前富文本eidtor,不支持真机插入临时地址，也就会写很多代码逻辑！
经真机测试确实支持临时路径了，这个非常实用可以在提交阶段再上传图片,避免
二次上传图片。

insertImage() {
      let that = this;
     uploadImg.localUpload_img(1).then(_res => {
       let pathImgArr = _res[0],              //得到原始图片临时路径的数组
           imgsizeArr = _res[1],              //得到原始图片缩放后的尺寸数组
           canvasidArr = [];                  //存放动态生成画布id

      that.setData({ canvasimg: imgsizeArr })
       canvasidArr.push(wx.createCanvasContext(`tempcanvas`))
       return uploadImg.getCanvaspath(0, pathImgArr, imgsizeArr, canvasidArr)//绘制图片

     }).then(c_res => {
       that.setData({ tempPath: c_res[0] })
        return that.uploadCloudimg(c_res)     //上传图片


     }).then(cloudimg => {
       
   that.editorCtx.insertImage({
          src: cloudimg[0],             //替换后图片下载地址
            success: function () {
              wx.hideLoading() 
              let tempPath  = that.data.tempPath,      //本地临时图片地址
                  tempimages = that.data.tempimages     //返回数据数组
                  tempimages.push([tempPath, cloudimg[0]])
                  that.setData({ tempimages})  
             }
          })

     }).catch(err => {
       wx.showToast({ title: '上传失败', icon: 'none', duration: 1500 })
     })
        
      
    
    },

//上传图片到临时文件夹
    uploadCloudimg(imagesArr){
      let timeRand = Number(new Date) + Math.ceil(Math.random() * 10000),
          filePath = imagesArr,              //本地路径
         cloudPath = [],                     //云路径
              type = filePath[0].match(/\.[^.]+?$/);

      cloudPath.push(`temp/${timeRand}${type}`)
      return uploadImg.cloudUpload_img(0, filePath, cloudPath).then(imgArr => {
        return imgArr;
      })
    },

精简一下

 insertImage() {
      let that = this;
     uploadImg.localUpload_img(1).then(_res => {
      
       let pathImgArr = _res[0],              //得到原始图片临时路径的数组
           imgsizeArr = _res[1],              //得到原始图片缩放后的尺寸数组
           canvasidArr = [];                  //存放动态生成画布id

          that.setData({ canvasimg: imgsizeArr })
          canvasidArr.push(wx.createCanvasContext(`tempcanvas`))
          return uploadImg.getCanvaspath(0, pathImgArr, imgsizeArr, canvasidArr)//绘制图片

     }).then(c_res => {
      
        
          that.editorCtx.insertImage({
            src: c_res[0],
            success: function () {
              wx.hideLoading()

            }
          })

     }).catch(err => {
         wx.showToast({ title: '上传失败', icon: 'none', duration: 1500 })
     })
        
      
    
    },