The port property of the URL interface is a USVString containing the port number of the URL. If the URL does not contain an explicit port number, it will be set to ''.

Note: This feature is available in Web Workers.


string = object.port;
object.port = string;


A USVString.


var url = new URL('');
var result = url.port; // Returns:'80'


Specification Status Comment
The definition of 'URL.port' in that specification.
Living Standard Initial definition.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
portChrome Full support YesEdge Full support 13Firefox Full support 22IE ? Opera Full support YesSafari Full support 10WebView Android Full support YesChrome Android Full support YesFirefox Android Full support 22Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes


Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

  • The URL interface it belongs to.

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Contributors to this page: mdnwebdocs-bot, chrisdavidmills, teoli
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