How to Upload Multiple Image Files in a Single Call in Reactjs - reactjs

Question

Other than workaround of calling fetch multiple times for multiple image files upload (looping through the files), on Frontend, How to upload multiple of image files by just calling fetch/Upload once? Could someone provide a simple example? Just like we do on Facebook.
Thanks in advance!
Update: I am done with looping logic in front end, now as there is loader on every image getting uploaded, Percent uploaded is getting calculated for all images in single value, how to split this value for all images separately?

Answer 1

Looping Logic
for (let i = 0; i <= e.target.files.length; i++){
let reader = new FileReader();
let file = e.target.files[i];
var self = this
reader.onloadstart = () => {
self.setState({ImageUploader: true})
}
reader.onloadend = () => {
var data = reader.result;
if (!file.type.includes('image')) {
alert('PLEASE CHOSE A IMAGE BRAH!')
} else if (file.size / (1024 * 1024) > 5) {
alert('PLEASE CHOSESmaller Image')
} else {
var url = 'https://api......'
var ifd = new FormData();
ifd.append('file', file)
axios({url: url,method: 'put',
onUploadProgress: function(progressEvent) {
var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total);
self.setState({Completed: percentCompleted})
}, withCredentials: true, data: ifd}).then((res) => {
this.setState({ImageUploader: false})
this.setState({
image_id: this.state.image_id.concat(res.data.reason.image_id)
})
})
this.setState({
file: file,
imagePreviewUrl: this.state.imagePreviewUrl.concat(reader.result),
noImage: false,
ImageChoosen: true
});
}
}
reader.readAsDataURL(file)
}