I want to create an uploader with js. Can anyone help me how to upload a file using javascript?
html file through a browser, the client will be able to upload a file to the server using Ajax and pure JavaScript. A pure JavaScript file uploader simplifies Ajax based interactions with the server.
HTML allows you to add the file upload functionality to your website by adding a file upload button to your webpage with the help of the <input> tag. The <input type=”file”> defines a file-select field and a “Browse“ button for file uploads.
File upload is not possible through AJAX. You can upload file, without refreshing page by using IFrame .
You can use html5 file type like this:
<input type="file" id="myFile">
You file will be in value:
var myUploadedFile = document.getElementById("myFile").files[0];
For more information see https://www.w3schools.com/jsref/dom_obj_fileupload.asp
and see example here: https://www.script-tutorials.com/pure-html5-file-upload/
You can upload files with XMLHttpRequest
and FormData
. The example below shows how to upload a newly selected file(s).
<input type="file" name="my_files[]" multiple/>
<script>
const input = document.querySelector('input[type="file"]');
input.addEventListener('change', (e) => {
const fd = new FormData();
// add all selected files
e.target.files.forEach((file) => {
fd.append(e.target.name, file, file.name);
});
// create the request
const xhr = new XMLHttpRequest();
xhr.onload = () => {
if (xhr.status >= 200 && xhr.status < 300) {
// we done!
}
};
// path to server would be where you'd normally post the form to
xhr.open('POST', '/path/to/server', true);
xhr.send(fd);
});
</script>
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