NavigateEvent: downloadRequest property

Baseline 2026

Newly available

Since January 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The downloadRequest read-only property of the NavigateEvent interface returns the filename of the file requested for download, in the case of a download navigation (e.g., an <a> or <area> element with a download attribute), or null otherwise.

Value

A string containing the filename of the file requested for download, or null.

Examples

navigation.addEventListener("navigate", (event) => {
  // Some navigations, e.g. cross-origin navigations, we
  // cannot intercept. Let the browser handle those normally.
  if (!event.canIntercept) {
    return;
  }

  // Don't intercept fragment navigations or downloads.
  if (event.hashChange || event.downloadRequest !== null) {
    return;
  }

  event.intercept({
    handler() {
      if (event.formData) {
        processFormDataAndUpdateUI(event.formData, event.signal);
      } else {
        doSinglePageAppNav(event.destination, event.signal);
      }
    },
  });
});