Baseline Widely available
The HTMLInputElement.files property allows you to access the FileList selected with the <input type="file"> element.
A FileList object listing the selected files, if any, or null if the HTMLInputElement is not of type="file".
The example below shows how you can access the HTMLInputElement.files property and log the name, date modified, size, and type of each file selected by the user.
<input id="files" type="file" multiple />
Note that HTMLInputElement.files still returns an instance of FileList even if no files are selected. Therefore it's safe to iterate through it with for...of without checking if any files are selected.
const fileInput = document.getElementById("files");
console.log(fileInput.files instanceof FileList); // true even if empty
for (const file of fileInput.files) {
console.log(file.name); // prints file name
let fileDate = new Date(file.lastModified);
console.log(fileDate.toLocaleDateString()); // prints legible date
console.log(
file.size < 1000 ? file.size : Math.round(file.size / 1000) + "KB",
);
console.log(file.type); // prints MIME type
}
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