the image component of the elementui upload photo wall used in the project is adjusted with the backend, and the url returned to me by the backend is a string. To transmit multiple images, I need to stitch together each string myself. How do I delete the stitched string when I do the delete operation? how do I know which one is selected and which one to delete?
I use a custom upload method
uploadImage (e, res) {
            let _this = this;
            let reader = new FileReader();
            reader.readAsDataURL(e.file);//base64
            reader.onload = function(){
                _this.imageName = e.file.name;
                _this.imageData = reader.result.substring(reader.result.indexOf(",") + 1);//"data:image/png;base64," 
                API.uploadImage({
                    imageName: _this.imageName,
                    imageData: _this.imageData,
                }).then(response => {
                    if (response.success) {
                        _this.form.imageList.push(response.response);
                        _this.form.roUploadImageUrls = _this.form.imageList.join(",");
                        _this.$message.success("");
                    }
                })
            };
        }
        
        elementui
        
        //
        handleRemove(file, fileList) {
        },