The HTMLAnchorElement.rel property reflects the rel attribute. It is a string containing a space-separated list of link types indicating the relationship between the resource represented by the <a> element and the current document.
The HTMLAnchorElement.rel property reflects the rel attribute. It is a string containing a space-separated list of link types indicating the relationship between the resource represented by the <a> element and the current document.
A string.
js
const anchors = document.getElementsByTagName("a"); for (const anchor of anchors) { alert(`Rel: ${anchor.rel}`); }
| Specification | 
|---|
| HTML Standard  # dom-a-rel  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
rel | 
1 | 12 | 1 | 5.5 | ≤12.1 | 1 | 4.4 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
<area> and <link>, HTMLAreaElement.rel and HTMLLinkElement.rel. HTMLAnchorElement.relList
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    https://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorElement/rel