upload() {
let formData = new FormData();
for (var i = 0; i < this.uploadedFiles.length; i++) {
formData.append("uploads[]", this.uploadedFiles[i], this.uploadedFiles[i].name);
}
this.http.post('/api/upload', formData)
.subscribe((response) => {
console.log('response received is ', response);
})
}