The hostname property of the Location interface is a string containing the domain of the URL. 
 The hostname property of the Location interface is a string containing the domain of the URL. 
A string.
js
const anchor = document.createElement("a"); anchor.href = "https://developer.mozilla.org:4097/en-US/docs/Location.hostname"; console.log(anchor.hostname); // developer.mozilla.org
| Specification | 
|---|
| HTML Standard  # dom-location-hostname-dev  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
hostname | 
1 | 12 | 1 | 3 | ≤12.1 | 1 | 4.4 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/Location/hostname