SVGAElement: port property

The port property of the SVGAElement interface is a string containing the port number of the SVG <a> element's href. If the port is the default for the protocol (80 for ws: and http:, 443 for wss: and https:, and 21 for ftp:), this property contains an empty string, "".

This property can be set to change the port of the URL. If the URL has no host or its scheme is file:, then setting this property has no effect. Invalid port numbers are silently ignored. Setting it also rewrites the element's href attribute as a complete, absolute URL.

See URL.port for more information.

<svg viewBox="0 0 200 30" xmlns="http://www.w3.org/2000/svg">
  <a id="link" href="https://example.com:443/">
    <text x="0" y="20">Example</text>
  </a>
</svg>

const link = document.getElementById("link");
console.log(link.port); // "" because 443 is the default port for https:

link.setAttribute("href", "https://example.com:8888/");
console.log(link.port); // "8888"