locutus/esm/rust/str/rfind.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function rfind(needle, haystack) {
    //      discuss at: https://locutus.io/rust/rfind/
    // parity verified: Rust 1.85
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //       example 1: rfind('l', 'Hello World')
    //       returns 1: 9
    //       example 2: rfind('x', 'Hello World')
    //       returns 2: -1
    return String(haystack).lastIndexOf(String(needle));
}