Function js_sys::encode_uri_component

pub fn encode_uri_component(decoded: &str) -> JsString

The encodeURIComponent() function encodes a Uniform Resource Identifier (URI) component by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two “surrogate” characters).

MDN documentation