weixin_43994675的博客

this.fileList = this.fileList.slice(-1);例子：`beforeUpload(file, fileList) {console.log(fileList);this.fileList = […this.fileList, file];console.log(file);console.log(this.fileList);//限制文件只能上传一个this.fileList = this.fileList.slice(-1);const isZip = f