URL: port property
Note: This feature is available in Web Workers.
The port
property of the URL
interface is
a string containing the port number of the URL.
Note: If an input string passed to the URL()
constructor doesn't contain an explicit port number (e.g., https://localhost
) or contains a port number that's the default port number corresponding to the protocol part of the input string (e.g., https://localhost:443
), then in the URL
object the constructor returns, the value of the port property will be the empty string: ''
.
Value
A string.
Examples
js
// https protocol with non-default port number
new URL("https://example.com:5443/svn/Repos/").port; // '5443'
// http protocol with non-default port number
new URL("http://example.com:8080/svn/Repos/").port; // '8080'
// https protocol with default port number
new URL("https://example.com:443/svn/Repos/").port; // '' (empty string)
// http protocol with default port number
new URL("http://example.com:80/svn/Repos/").port; // '' (empty string)
// https protocol with no explicit port number
new URL("https://example.com/svn/Repos/").port; // '' (empty string)
// http protocol with no explicit port number
new URL("https://example.com/svn/Repos/").port; // '' (empty string)
// ftp protocol with non-default port number
new URL("ftp://example.com:221/svn/Repos/").port; // '221'
// ftp protocol with default port number
new URL("ftp://example.com:21/svn/Repos/").port; // '' (empty string)
Specifications
Specification |
---|
URL Standard # dom-url-port |
Browser compatibility
BCD tables only load in the browser
See also
- The
URL
interface it belongs to.