coderef

Retriable module loadingLimited availability

You can retry importing a module that failed to import previously. Failed module imports, through the import JavaScript statement, the import() JavaScript syntax, or dynamically created <script src="…" type="module"> HTML elements, aren't cached.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
✕Not supportedup to 155
Current: 155
Edge
✕Not supportedup to 154
Current: 154
Firefox
1–154Not supported
155+Supportedsince Sep 1, 2026
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
✕Not supportedup to 155
Current: 155
Firefox Android
4–154Not supported
155+Supportedsince Sep 1, 2026
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Chrome, Edge, Safari, Chrome Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN — see the links below.

Feature detection

JS · check before using
if ("type" in document.createElement("script")) {
  // the type attribute/property of <script> is supported
}

Specification

Sub-features

Support for each part of the feature (3). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
script.type.module.http_errors_not_cached✕✕155✕✕155✕
import.http_errors_not_cached✕✕155✕✕155✕
import.http_errors_not_cached✕✕155✕✕155✕