图片上传

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);

  });
});