FileList: length property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
Note: This feature is available in Web Workers.
The length
read-only property of the FileList
interface returns the number of files in the FileList
.
Value
A number indicating the number of files in the list.
Examples
Printing the number of files selected
In this example, we use length
to find the number of items in the FileList
.
HTML
html
<input type="file" multiple />
<div class="output"></div>
JavaScript
js
const fileInput = document.querySelector("input[type=file]");
const output = document.querySelector(".output");
fileInput.addEventListener("change", () => {
const fileList = fileInput.files;
output.textContent = `You've selected: ${fileList.length} file(s)`;
});
Result
Specifications
Specification |
---|
File API # dfn-length |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
length |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.