The HTML structure for the file input & file preview area. createElement() method:. The T-Rex image is here and the direct link is here. However, it is recommended to obtain a secure version of it using the secure_filename() function. Handle AJAX successful callback with onreadystatechange() method. Before getting started to integrate file upload with progress bar, take a look at the file structure.
To send AJAX request create an object of XMLHttpRequest. How to use it: Install it via package managers. · The file-upload-with-preview.
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