coderef

<link rel="expect">Limited availability

The rel="expect" attribute for the &#x3C;link> HTML element is a hint to the browser to block rendering until the element that the href value references is connected to the document and fully parsed.

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

How to use ↓Compare browsers

Browser support

DesktopChrome
1–123Not supported
124+Supportedsince Apr 16, 2024
Current: 155
Edge
12–123Not supported
124+Supportedsince Apr 18, 2024
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
1–18.1Not supported
18.2+Supportedsince Dec 11, 2024
Current: 27
MobileChrome Android
18–123Not supported
124+Supportedsince Apr 16, 2024
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
1–18.1Not supported
18.2+Supportedsince Dec 11, 2024
Current: 27

How to use

Not supported in Firefox, Firefox Android. 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 ("rel" in document.createElement("link")) {
  // the rel attribute/property of <link> is supported
}

Specification