this.$nextTick(function() {
    let _self = this;   $(this.$el).on('change', 'input[type="file"]', function() {
      // 判断图片类型     const rFilter = /^(?:image\/jpeg|image\/png|image\/bmp)$/i;     const imgFile = this.files[0];     if(!imgFile) return;     const _this = this;     const reader = new FileReader();     reader.onload = function(e){
        const data = e.target.result;       const image = new Image();       image.src = data;       image.onload = function(){
          const width = image.width;         const height = image.height;         if(width != 1029 || height != 270){
            $(_this).val('');           return globalBus.$emit('warning', '尺寸需要1029*270哦!');         }else{
            if(rFilter.test(imgFile.type)){
              // 判断图片大小，通过max-size传值，100kb             if(Math.ceil(imgFile.size / 1024) < _self.maxSize){
                common.ajax({
                  target: $(_self.$el),                 url: DI.common.upload,                 success: function(data){
                    if(data.retCode == 0){
                      const info = data.data;                     console.log(info);                     _self.$emit('input', info)                   }else{
                      globalBus.$emit('warning', data.retMsg);                   }                 }               }, true)             }else{
                $(_this).val('');               globalBus.$emit('warning', '图片大小不能超过' + _self.maxSize + 'Kb');             }           }else{
              $(_this).val('');             globalBus.$emit('warning', '商品图片格式需要上传jpg,png,bmp哦');           }         }       }     }     reader.readAsDataURL(imgFile);   }); });