14图片上传File对象不兼容IE

非IE上传:

将base64为图片转换成file文件,上传

let formData = new FormData();

  file = that.dataURLtoFile(data,this.file.name);

  formData.append('files',file);

dataURLtoFile(dataurl, filename) {

            var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],

                bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);

            while(n--){

                u8arr[n] = bstr.charCodeAt(n);

            }

            return new File([u8arr], filename, {type:mime});

        },

 

 

IE下上传:

因为IE是不支持File对象的,或报此对象不存在的错误

解决办法:

 

var blob = null;
    blob = new Blob([u8arr.buffer],{type : mime});