The protocol read-only property of the URLPattern interface is a string containing the pattern used to match the protocol part of a URL.

This is the normalized value of the protocol pattern passed to the constructor, an inherited value from a baseURL passed to the constructor, or the default value ("*"), which matches any protocol.

Value

A string.

Examples

Basic usage

The following example creates a URLPattern object with http{s}? for the protocol part and logs the property. This pattern matches any URL that has the http or https protocol.

const pattern = new URLPattern({ protocol: "http{s}?" });
console.log(pattern.protocol); // 'http{s}?'
console.log(pattern.test("https://example.com/shoes?q=baby")); // true

Specifications

Browser compatibility